HBO

An acronym for Hiney Blow Out, a sex move in which the ass is eaten then blown into to/blown out.

It got real messy when MGK gave Megan Fox an HBO.

HBO

HBO - means hair belonging to others.

Jess: Approximately how much would an HBO cost?
Cashier: Around $150

If a girl walks into a weave shop and she wants to buy a lace wig (human hair) she could just ask for an HBO.

HBO

Acronym for: Honast Bro Opinnion.

Happens during casual bro to bro conversation. Most common during a a conversation about a bro's personal life and problems with it.

Bro 1: Bro, what do I do? I mean shes great and all but I got something going with another chick?

Bro 2: Shes bad news bro. Ditch your ex and take the new chick. HBO on that.

HBO

Hinee blow out
When one blows air into their partners rectum and proceeds to perform analingus on them as the air escapes from the rectum.

Guy 1: hey bro, why are your eyebrows all messed up?
Guy 2: I just gave my lady/man a hbo. Kinda like sticking your head out a sunroof.

hbo is a hoe

When you have to pay more for a premium movie package

HBO is a hoe because you have to pay like a 1t extra dollars like bruh, I'm broke as shit, I can't afford this, and imax, and so on.