Cock-o-copter Edit Meaning

1.

(v) The act of gripping the base of one's flaccid penis and twirling it around (mimicking the whirling motion of a helicopter blade) when jumping from a tall structure; usu. in an attempt to slow one's descent.

The cock-o-copter is thought to have been invented by Scotsmen in the early 1400's, as an effective method of flying/gliding when combined with the parachute-like properties of their kilts. The overall goal is an effect much like that achieved by modern-day airships (blimps).

Did you see how good Jon's cock-o-copter was off of that bridge? He almost levitated!

See cock, copter, helicopter