look up any word, like darude - sandstorm:
 
1.
used mostly in new jersey when you dont have time to waste words on someone, because you kno what they are saying either:
1.dont make any sense
2.dumb/stupid
3.aggravating
4.go againt what you think
John: "I want to go to Wendy's they have the best fries."
Tina: "Boy bye! Wendy's fries are nasty, White Castle is way better."

The ugliest guy u have ever seen walked up to you asking you for your number..Your response would be "boy bye".
by tenneisha April 15, 2008
 
2.
Means to go ahead with yourself... Get out of someone's face...leave me alone... Get away from me... The answer is NO!
Example :Excuse me miss, can I call you some time? And the women reply.... Boy bye!
by Stormy777 December 31, 2013