Any tough material that can be hit against an annoying friends' body because of how irritating they are.
John: Hey Bryan, can you help me with something after school?
Bryan: Sure!
John: Alright. Just come by my hou-
Bryan: *interrupts* PHYSCH! I'm gonna go get drunk after school.
John: *sighs* I need to go get an ousia to hit against that small skull of yours.
by Raining Rainbows October 12, 2022
Get the Ousia mug.