When you have to use the bathroom badly, but you wait a few minutes into the class to go just so you can shorten the amount of time you're there.

YOU ARE READING
You Don't Even Know...
AléatoireJust little thoughts and shmeels; a Random Book filled with likely to be crazy things that you don't even know if they'd make sense or not...I mean, I know they don't, so- PROCEED WITH CAUTION! (Yep, that was a forced callback to the title- YEE HAW)...
Shortening Class
When you have to use the bathroom badly, but you wait a few minutes into the class to go just so you can shorten the amount of time you're there.