Tits moving a rhythmic circular motion similar to that of a helicopter rotor when fucked. Most commonly seen in larger natural breasts it can be induced in smaller breasts provided enough force is applied.
by Mystic-X October 04, 2009
When you take a virgin girl who is your good friend, and she shows you her tits. The person looking at her tits shows her his penis and then moves his penis around like a helicopter and starts saying, "GET TO THE CHOPPA NOW!" This only takes place during school in private.
by John Hancock The Fourth November 17, 2008