a wriggler (mosquito larva)

singles (in tennis)

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.

(telephony) a common Japanese telephone greeting: hello; used when answering the telephone / used to confirm that the person being addressed is listening, or to confirm if anyone is listening

put away

forget oneself / be beside oneself

yakyuken or strip rock paper scissors (a version of Rock-Paper-Scissors where the loser has to remove an article of clothing, accompanied with a song and dance)

baseball player

baseball cap