What is Ha Ha?
1.
something very funny
that guy just magurted too much beer and fell over with a dopey grin on his face. it was pretty ha ha.
See
2.
Slang term for defication. Though the reasoning for calling a bowel movement a "ha ha" is generally unknown, it is speculated that the reason invovles the comic value of pooping.
-Mom, where is grandpa?
-Oh, he's going ha ha.