What is Bi 5?
1.
when you hi 5 a bi-sexual.
often used to imply the person you are hi 5ing is a closet bisexual.
hey sam nice bi five!
"Hey Joseph, did you just hi five Jake?"
"No way man, that was a definite bi 5!"
"Wait, so he's a ---"
"Yep, biggest bi on the block!"
See