What is Trouser-flappin'?
1.
When you are standing next to a speaker at a concert or a party and the power of the music makes your trousers move.
Happens more with bass bins. Coined by DJ Nark.
The music was trouser-flappin' last night! Whopper tunes!
See
Random Words:
1.
A very young promiscuous girl
Man your baby sister is a knee high hoe.
When used as a Plural:
If your over 17, stay away from there..