a Buck Fitty
It’s when you flip the first letters of "fuck bitties" and make it "buck fitty" so you can say it in public and not get yelled at by your mom.
"I said buck fitty in class, and my mom was mad.", said by a kid who got caught using slang.
"Buck fitty is just fuck bitties flipped, and I know that because I’m cool.", said by a kid who was trying to be smart.
"My teacher said I used buck fitty and I had to write an essay on it.", said by a kid who got in trouble for being funny."