Klaus doesn't catch what Diego is about to do, but the smirk instantly brings him dread. When he starts tipping the wine over, Klaus nearly tries to—what, catch it? He realizes how useless that would be halfway through the act and instead just looks on in shock and horror.

"Diego, you fucking—"

And then his brother just picks up the screwdriver like he didn't just commit a sin against... well, not God, but Klaus, because God is kind of a dick and wouldn't really care. She might just think it was funny, really. Heinous.

"'This place,'" Klaus says, air quotes included, "is party island, and you just... You know I'm not above licking the floor, you monster."