Commonly used as an expression of distaste at another person. Typically said to yourself when someone hangs up on you prematurely or walks off mid conversation.
"Oh, bye then"
People who use bye then in normal conversation are often seen as actively aggressive individuals and rude to others.
Alex: Hey, I'm Bout to have this one girl come to my house, but I never met her before.
Mike: Really? Are you nervous?
Alex: I dont know man its a bye bye.
By Desdemona
BYE
Used as a responding word, like "lol, "lmao" and "omg I can't even". Figuratively meaning that your leaving, like you can't deal with what has been said.
Requis: "Sometimes I wonder when you'll stop saying "BYE""
Felicia: "OMG BYE"