Lafin
When you laugh so hard your face turns red and you forget how to breathe. You just sit there like a idiot yelling 'LAFIN' because your brain is dead.
My dog ate my homework and I was LAFIN so hard I spilled my soda.
She told the teacher her goldfish died and I was LAFIN so loud the principal came.
He tripped over his own feet and I was LAFIN so hard my neighbor asked if I was okay.