When you are trying to say "haha" but you type the wrong letter and it actually makes the reason you were saying "haha" funnier

A swimmer

The point of laughing so much that you lose control of your typing and spell your virtual laughter wrong.

The sound a Canadian makes when he's ejaculating.

I really need to visit the toilet

When you find something so funny that you just can't help but yell out "HAGA!"

A new way of laughter. Just the best possibla way to laugh. Often used with another word said like, HEGE HAGE.