b.y.o.b&b
It means you have to bring your own loud, ugly girlfriend and a beer. No exceptions. No mercy.
I just got a DM: ‘Don’t forget to bring your own bitch and beer. Your sister’s coming and she’s bringing her own drama.’
The invite said ‘b. y. o. b&b’ and I was like ‘Okay, but why?’
My friend showed up with her own bitch and beer. I had to bring mine too. Now I’m stuck with two bitches and four beers.