[Karkat takes notice of what the glasses look like but he doesn't say anything. Hell he trusted Gamzee enough to wash those things out before serving anything in them. He took the cup when offered, watching Gamzee down his before mimicking his movements - he'd never drunken anything alcoholic before, so it was probably a good idea to take an example.

It's only a second later that Karkat brings his head back down to cough into his free hand, eyes wide.]

Shit, that tastes like ass.

[But he's going to shut up and drink it anyway.]