Use frequently with common "otaku" lingo and bad grammar, along with random Asian-sounding noises, and you'll sound genuinely Wapanese!
Sounds best when used with a squeaky, annoying voice.
TSU has me on post watch for no reason.
-Noun, verb, adjective
To do, be, described as something so beastly that you cannot reason with yourself.
Jamal's dance moves were TSU so badly that everyone fell down.
Michaella' s TSU playing the tuba was so extreme that it made the judges cry in joy.