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1. hihi
A greeting typical in online games, message boards, instant messages, etc.

Can add as many hi's as you want to it for emphasis.
1) Random_Noob_01 has entered the game.
2) Random_Noob_01: hihihihi
by Asiafan Jul 28, 2003 add a video
2. hihi
The sound made when you laugh.
You can also use haha, and hehe.
Works either way.. :P
Hihi.. thats funny..

or with irony..
(you seesome dude fall down and break his leg off): hihi.. fun-ay.. *not*
by Odda2k Mar 8, 2004 add a video
3. hihi
Greeting used by pre-teen and teenage girls, (sometimes guys) in central Florida who are hyper almost all the time and, laugh at every little thing in the world; should always be typed with an exclamation point. This was started in Citrus County, FL in mid 2006.
*Girl 1 walks into room*
Girl 1 – Hihi!
Girl 2 – Hihi! What’s up?
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