I think that's funny.
A response to
something very funny, worth laughing at, but not quite
rolling on the floor laughing ROTFL or laughing one's ass off
LMAOCan be used both online and in general conversation.
Brandon says: Why did the fish get kicked out of school?
Tara says: I don't know why?
Brandon says: Because he was caught with seaweed.
Tara says: Oh man hhahah ITTF!!