The quickest way to pretend that you're interested and also a reason for you to close his or her IM box.
johnnyboy:Hey Janet, I was at the mall today and I saw this really cool shirt that said "I'm a punk rocker" and I thought of you.

Janet124: haha

johnnyboy: =D hehe ya know?

Janet124 Signed Off..
by audiomind5 September 27, 2005
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Short quick way of letting somebody know you are laughing, most likely at them.
You failed your exam? Haha, er, that's too bad...
by DrNick February 27, 2004
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A form of expressing laughter when oral expression is not available, like on the internet.
Hah - The person thinks a comment is mildly funny.

Haha - The person does not think the comment is funny, but acknowledges your attempt humor.

Hahaha - the person thinks the comment is funnier than average, or is just more enthusiastic than those who normally say haha.

Hahahaha - The person is just being excessive. Usually used to strengthen a friendship because an inside joke was just mentioned.

Haha is almost never used to express actual laughter occuring. For those circumstances, rofl, lmao, or a whole sentence about how the comment actually made one laugh is used.
by rikochet July 27, 2008
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used by nelson in the simpsons in many of circumstances
bart: the burgular even stole my stamp collection
lisa: you had a stamp collection??
(rest of family laughs)

(phone rings) nelson: stamp collection? haha!!
by spiderjam November 6, 2007
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person1: I made a really good sandwich yesterday.

person2: "haha"
by my pseudonym? ok March 24, 2011
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