An explaination of a failed attempt (most commonly used in referance to a trick in any extreme sport such as skateboarding) in which the board or other object sticks up in an uncommon fassion resembling a "boner".
Bob - "whoa! Dude, did you see billy air out of that ramp? What the heck was That supposed to be?
Joe - "I have no clue, but he sure got some serious boner air!"