尻けつバット

noun

spanking with a baseball bat

Slang term for a punishment or hazing where someone is hit on the buttocks with a baseball bat. Often associated with school sports clubs or rough humor.

• 部ぶ活かつでミスしたら、先せん輩ぱいに尻けつバットされた。

  When I made a mistake at club practice, the seniors gave me a bat spanking.

• あのコントでは、罰ばつゲームとしてケツバットが定てい番ばんだ。

  In that comedy sketch, a bat spanking is a standard punishment game.