Pop.

Was sitting in here with a friend tonight helping her with math, with the door halfway open, when quite the unusual event occurred. There was a balloon just sitting on the other side of the hallway outside my door minding its own business, when suddenly my sentence was interrupted by the sound of a large object stomping down the hallway and to our surprise, leaping into the air trying to stomp both of his feet down onto the balloon before he landed. He of course glanced off, and basically ended up launching himself horizontally further down the hallway and slamming into the ground with a resounding thump. The whole incident took about two seconds, but it was enough to keep my friend and I gasping for breath for the next several minutes.

The guy eventually managed to pop the balloon, on about the third stomp.