1 definition by wannaplayagame

boom cup

1. When your music player isn't loud enough, you put your music player (e.g. iPhone) in a cup, and the volume of your favorite song amplifies.

2. you put yo music in a cup and it go BOOM

Ay, Kevin was taking a dump and I could hear Wiz Khalifa from his boom cup in the bathroom.

by wannaplayagame November 15, 2011