Person A: Whats up?
Person B: Nothing.. ha
(Take note of the terrible use of this word.)
Person A: Guess what?
Person B: What?
Person A: NOTHING!
Person B: HAHAHAHAHAHAHAHAHAHA YOU SO FUNNAY.
(Take note of the proper use of "Ha" and how less preppy it is.)
*plays on* - "RING DING DING DING DING BAW BAW RING BEE BEE BO POW POW WHA WHA"
Person 1: ha...
Definition 2 : An expression that meant something said wasn't funny, or just gave you a little chuckle. Maybe even just said to make yourself look not mean.
Def 2 :
Person 1 : It was like sooo funny!!
Person 2 : Ha....
Basically it's a way to say lol, without having to say lol. It's great.