Regular Tricks
Can-Can – When a motorcycle rider lifts their foot over the seat to the other side and moves it back again
CliffHanger – When a motorcycle rider hooks their feet under the handlebars and then reaches up vertically. Other names include the ‘Jackhammer’ or ‘Christ Air’, where the rider does different movements of their hands
Dead Body – The motorcycle rider sticks their feet through the handle bars, then flattens out their back as if they were dead on the ground, a variant is when the rider spreads their legs apart, called at 'Dead Body Shaolin'
Coffin – Similar to the ‘Lazy Boy’, except the  motorcycle rider doesn’t extend their hands out, but still leans back, making their legs horizontal under the handlebars, as if they were in a coffin
Double Grab – When the motorcycle rider uses both hands to grab the grab holes or seat and extend their body upwards
Fender Grab – When the FMX motorcycle rider grabs the front or back fender with their hands
Hart Attack – Named after its creator, Carey Hart, the rider puts one hand on the handle bars and the other on the grab hole and extends their body upwards
Helicopter - Hart Attack with Indian Air.
HeelClicker – The motorcycle rider moves their legs above the handle bars and clicks the heels, whilst holding on to the bars. This motorcycle trick is perhaps the basic trick of FMX. 
Lazy-Boy – When the motorcycle rider move their body flat on the bike, moving legs horizontal under the handle bars, and arms back, as if they where in a Lazy-Boy chair. It was invented by Travis Pastrana. A variant of this trick it when the rider put his hands on their motorcycle helmet, commonly done by Travis Pastrana.
McMetz - involves the rider lifting himself off the bike and taking his arms, placing them underneath the handlebars and then pulling them out by taking his hands of the bars. He then sits back down on the motorcycle before landings. Variations include the 'Double McMetz' were the trick is performed twice in one jump.
Rock Solid – When the motorcycle rider moves out from the seat, doing a double grab, then letting go of the bike, moving hands away, usually out to the sides of the bike, resembling a cross. Other names include 'Holy Man' as the rider resembles Jesus Christ on the cross.
One Handed SeatGrab - Where the motorcycle rider puts one hand on the handle bars and the other on the seat, extending legs horizontally, not to be confused with a 'Hart Attack
Ladder - The motorcycle rider changes hands whilst performing One Hand Grab.
Oxecutioner - One Hand Grab with the other hand grabbing rider's boot. When the right hand grabs the left boot or the left hand grabs the right boot the trick is called Cross-Oxecutioner.
Scorpion - Hart Attack with both arms stretched and curved over legs, resembling a scorpion.
Kiss of Death (KOD) – When the rider moves their head towards the front fender, as if to kiss it, whilst bringing their legs upwards from the motorcycle. Invented by ‘Mad’ Mike Jones
Tsunami – When the motorcycle rider moves the bike and their body vertical, then curves their legs over, resembling a tsunami
Ruler – When the rider moves the bike and their body vertical
SideWinder – Involves the rider dismounting their bike and moving to one side, then running in the air, whilst not holding the handle bars. Also known as a CatWalk, named after Tommy ‘TomCat’ Clowers. A variant of this trick called the ‘Wilma’, when a rider holds the handle bars with one hand and performs the trick, invented by Travis Pastrana
9 o’clock Nac – When the motorcycle rider moves their body to the o’clock position extending out wards from the bike. Rider can go up to the 12 o’clock position on occasions.
9 o’clock Indian Air – The motorcycle rider does a ‘9 o’clock Nac’ then does an ‘Indian Air’ scissor kicking their legs
Ninja Nac - No handed 9 o'clock Nac (no confirmation of anyone performing this trick)
Flatliner - Similar to the 9 o'clock Nac but the rider and the bike are stretched in one plane supposedly parallel to the ground.
Side Grab - FMX motorcycle rider is stretched in a line and positioned perpendicular to the bike holding the bike by the seat with both his hands.
No Footer Can-Can (NFCC) - When the motorcycle rider lifts above the bike, and moves both feet to one side of the bike over the seat, body is bent, heels looking down or backward.
Double Can-Can – When the motorcycle rider lifts above the bike, and moves both feet to one side of the bike over the seat, and stretches in a line with his heels looking up (somthing in between 9 o'clock Nac and Side Grab).
Pendulum - No Footer Can-Can to one side, then to the other.
Disco Can – When the rider lets go of one the handlebars and points his index finger in the sky, whilst performing a ‘No Footer Can-Can’
Suicide Can – When the rider lets go of the handlebars whilst performing a ‘No Footer Can-Can’
SwitchBlade - Almost Bar Hop, but both legs are positioned on the left or on the right, but not over the bar.
Candy Bar – When a rider moves one leg between the handlebars and back again
Saran Wrap – When a motorcycle rider does a ‘Candy Bar’, but moves the leg out to the side of the bike, letting go of one hand. The reverse of this is called a ‘Reverse Saran Wrap’
Nac-Nac - Invented by supercross/motocross star Jeremy McGrath, involves the motorcycle rider moving their leg over the bike, extending that leg out, while keeping the other leg on the foot peg.
No Footer – When the motorcycle rider moves their legs outwards from the bike, dismounting their legs from the foot pegs
No Hander – When the FMX motorcycle rider lets go of the handle bars
Cordova – When the motorcycle rider hooks their boots under the handle bars and arcs their back to the font of the bike, whilst holding onto the handlebars with their hands. The rider may also put hands onto seat instead of handle bars
Stripper – When the motorcycle rider performs a ‘Cordova’ and extends one leg out from the bike
Rodeo – When the motorcycle rider perform a one handed ‘HeelClicker’ and moves the other hand in circles above their head, as if they were riding a bull in a rodeo
Decade Air - When the motorcycle rider revolves himself 360 about the fork axis over the bar (the bike flies straight).
Nothing – When a rider performs a ‘No Hander’ and ‘No Footer’ at the same time
Super Can – When the motorcycle rider does ‘No Footer Can-Can’ but points their feet upwards.
Superman – When the motorcycle rider moves their feet out parallel to and above the bike
Indian Air – When a rider performs a ‘Superman’ but does an Indian Air, scissor kicks their legs
Superman Seat Grab – When a motorcycle rider does a ‘Superman’, but uses one hand to hold onto the seat or grab holes instead of the handlebars
Superman Seat Grab Indian Air – When a motorcycle rider performs a ‘Superman Seat Grab’ but does an Indian Air, scissor kicks their legs
Stalefish – When the motorcycle rider sticks one leg between the handlebars and the other leg on the other side of the arm. A Variant of this trick is when the motorcycle rider clicks their heels, called a ‘Stalefish HeelClicker.’ A FMX motorcycle rider may also perform a Saran Wrap whilst returning to remount the bike, which is be called a ‘Stalefish Saran Wrap’
Bar Hop – When the rider moves both feet between and through the handle bars
Turntable – When the motorcycle rider does a ‘Bar Hop’, then moves both feet to one side, letting go of one hand, then remounting the bike.
Shaolin - Bar Hop with legs pointing sideways.
Whip – When the motorcycle rider moves the motorcycle perpendicular to the ramp. That style of whip is called a turndown, while other styles move the bike flat.

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Types Of Landings.
No Hander Lander (First landed by Mike Jones)
One Handed Lander
Sterlizer (First landed by Clifford Adoptante also know as the Flyin Hawaiian; also notably used by Trevor Vines)
Side Saddle Lander (First landed by Brian Deegan moto x)
Standard Lander ( standing up on pegs )
Blind Jerry ( cover eyes with both hands )
Stoppie Lander
Wheelie Lander

This list is incomplete; you can help by expanding it.
Famous Freestyle Motocrossers!
Travis Pastrana
Nate Adams
Brian Deegan
Kenny Bartram
Jeremy Stenberg
Andre Villa
Sebastian Wolter
Kyle Loza
Adam Jones
Todd Potter
Ailo Gaup
Carey Hart
Mike Metzger
Beau Bamburg

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