You sat next to Shun Izuki in class, and you could hear from his table was a multitude array of puns that either made no sense or just weren't funny.

During class and lectures he would make comments, random comments about the class or the contents.

During break after the teacher had left he looked towards you elbows on your table as he looked into you eyes.

He opened his mouth and said, "Do you want to hear a joke about unemployed people?" he already started chuckling before he finished... "Oh wait.. None of them worked"

He looks up still laughing to himself as he recites the joke to you.