Jacob challenged gungeprefect to an exam. If gungeprefect got an 80, Jacob would have to shower in is school uniform. However, if he lost, gungeprefect would get gunged in light blue gunge.

You can clearly tell who the loser was.

Outfit is white dress shirt, red-navy tie, gray trousers, black belt, dress socks, and penny loafers.

(Sorry if the video is grainy)