N Mouse

a.k.a Mouse Wizard, is an osu!mania map created by drunkenstein
When set on 1.31x rate, it is considered to be eta difficulty
The map was later put in a mappack with extremely hard maps, Mouse Wizard 1.31 being one of them
Then it became a meme in the vsrg community and was called N Mouse instead of Mouse Wizard, due to the greek η looking very similiar to the english n

KaneMining: YO I 97.27% MOUSE WIZARD 1.31
Random Dude: WTF N MOUSE AND WYSI