The act of making ones penis spin around like the propellers of a helicopter by wiggling ones hips.
(verb) 1. Chuck stood in front of the mirror and began to peencopter.
(noun) 2. George found out the hard way that the peencopter should be done wisely as you can throw out a hip if done incorrectly.
A guy who is a loser and has no friends, is homosexual, and they typically where the same stupid sweatshirt everyday because they don't clean themselves.
I feel bad for Jon he always sits alone like a total peenop.
John has not washed that sweatshirt in a week he smells like a peenop.