Skateboarding Tricktionary - J

Japan Air

A grab trick - the skater grips the toeside edge of the skateboard behind the front trucks with his front hand, twists his body away from the grip and drops his front knee towards the deck. In the process, the board is pulled up behind and parallel to the skaters body. Confused? See Tony Hawk in action for clarification. Like most grab tricks, the further the board is pulled back or 'tweaked' the more stylish the trick is considered to be.

This correct definition brought to you courtesy of Anthony and Tony ganging up on me.

Jawbreaker

Primo Desiderio's version of the TV stand. Instead of having your main (read: strongest) arm on the bottom truck during the handstand, you have it on the top truck, making an already hard trick even harder.

Jolly Mamba

A miller flip that is taken out, over the coping, and stalled in an invert half way though.

Judo Air

The judo is a grab trick invented by Tony Hawk. It's a one footed nose grab where the front foot is extended to the toeside of the board in a mock martial arts flying kick.