What is Biyf?
meaning - "boobs in your face"; an expression used to wish good luck, congratulations, to wish good things upon a person, or a general positive greeting
Hey Jim, I hear you graduated! Biyf!
Abbreviation for Boobs In Your Face
Used online as a greeting, goodbye, or just in general conversation during instant messaging, text messaging, etc..
Generally a positive thing to say to a guy, or anyone who has an affinity for breasts.
"Ok see you tonight. biyf"