The first time you four finger the front brake on an enduro on a gravel road, and learn how high you can bounce off of the earth, collarbone first.
Stalling a bike at a red light because you let the clutch out without hitting the gas. Then subsequently "making up" for the stall by doing a rather nice balance point 20mph wheelie for 50 yards..... in front of an unmarked cop.
Getting pulled over for doing 32 in a 65 going the wrong way on a highway on a children's dirt bike- doing a wheelie.
Yeah, I'm a dumbass.