hahaholic
A person who laughs so much it sounds like a broken kazoo. They say haha everywhere like it's their life's mission.
He said 'haha' to my post about my cat eating my homework. Then he said 'haha' again. Then he said 'haha' a third time.
She sent me a message that said 'hello' and I said 'haha.' Then I said 'haha' again. Then I said 'haha' a third time.
He posted a picture of a sad dog and I said 'haha.' Then he said 'haha.' Then I said 'haha.' Then he said 'haha.'