Top Definition
The process of overly laughing, most notably during an IM conversation or any sort of electronic communication. The over laugh can be noted by the excess use of haha or lol. It especially gets annoying when others overha over something unfunny or a joke that wasn't that funny.
Fredrick:Hey Juan, what do you call cheese that's not yours?

Juan:IDK

Fredrick:Nacho Cheese

Juan:HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA

Fredrick:Sometimes you overha Juan.

Juan:HAHAHA no such thing.
by Freudian July 09, 2009

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