hahahaed
You use hahaha on AIM when something is so funny it deserves a standing ovation. Just 'haha' is like a yawn. You need to go full-on laugh mode.
'He said, 'I failed my math test and I’m proud.' I hahaha’d for ten minutes.'
'She told me her dog died. I hahaha’d so hard my keyboard broke.'
'He said he cried at a commercial. I hahaha’d so loud my neighbor called the cops.'