Gadaguer
A person who is so funny they make other people cry from laughing so hard, even if their jokes are terrible.
My friend is a gadaguer. He told a joke about pizza and I cried.
My cousin is a gadaguer. She makes up jokes about the internet and it's the worst.
My brother is a gadaguer. He told a joke about socks and I laughed until I got a stomachache.