maybe it means that you are really really happy that you feel like a dancing banana... that's at least what i get! lol
Banana!!!!!!!!!!!!!!!!!!!! (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) (!) lol....
I always just thought it was a fun little cheerful dancing mood kind of thing. I don't think it has that deep of a meaning. Just a fun little icon.
Its like when you come home from a date and you feel all jittery and butterflies and stuff...dancing banana lol