BYS is the abbreviation for the full form "bully yourself". This term has been created by user "confs4me" with the help of "quackikrew", both on instagram. You can use this term instead of saying "kys" which stands for "kill yourself" if you're trying to be less harsh. "bys" is basically an alternative to "kys" jokes.
bys dad!

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HO #1: Max fucked me SO hard last night I couldn’t even remember my own damn name!
HO #2: Girl, you was dumbpounded AGAIN? Damn, why can’t I get me some of that?
HO #2: Girl, you was dumbpounded AGAIN? Damn, why can’t I get me some of that?

Popular with teens in the Washington, DC area in the late 50s and early 60s as a euphanism for "Jesus Christ."

