When I Was In 5th Grade, Lol

I was in 5th grade, taking a math test... just after lunch I believe, LOL

The room was quiet, the pressure was building.  I was fidgeting in my seat trying to restrain myself.  I did not want to ask to go to the bathroom in the middle of a test. 

Then it happened... reverberating off of the hard school desk chairs.

BBBBBRRRRRRRRRRRRRRRRRRRRRRRRRRTTTTTTTTTTTTTPPPPP!

EVERYONE BUSTED OUT LAUGHING!  I don't know if everyone or anyone knew who did it, but I did, LOL 

Memorieeeeeeeeeees!