To be smoking methamphetamine or crack cocaine from a rose tube, which is phallic in shape. Usually said when someone suggests or says something so dumb, that it's on par with what you'd expect a crackhead to say.
Stranger: heyy, would you be interested in investing in my multi-level marketing product for essential oils?
Wiseass: you must be sucking the glass dick if you think I'd fall for that shit!
What all OU girls absolutely love to do. Those bitches throw neck on any nigga and love the taste of cum. All you have to do to get some is just ask, but I advise you not to do that unless you want an STD.
Bro, last night I saw two OU girls sucking dick on the same dude, holy fuck these bitches are hoes.