jaja can be used for another (retarded) way to spell haha, much like aha, but on messenger it usualy is a word to express lack of better words or intrest, much like jahaonly with a more whatever tone to it
1:man i just came between that bitch her tits and she was all over the place, dude u gotta hear this
by [_m4] July 10, 2006
A popular term used by the 20-24 bracket in World of Warcraft targetting the Portugese and non English speaking WoW players in the same bracket. Known for saying jajajajaja and acting retarded.
by Fryingpwn December 19, 2013