adj: between sober and falling-down drunk (guess based on context). Subject has consumed some alcohol, is buzzed, rowdy, having a good time.
heard in the raunchy, bawdy performances of John Valby a.k.a. Dr. Dirty, usually performed live at bars.
Oh, you guys in the second set are half in the bag, you can't remember shit. (when the audience forgets new lines of a singalong)
It's where she jerks your dick while licking your asshole.
I met this skank at a bar, and she totally gave me a handrimmer in my van. I think I'm in love.