No, you're acting like mentally delayed grubs. Fucking stop it!
[Then he does the bravest and stupidest thing he could do in a situation like this; he tries to pry them apart. His sandwich lies forgotten on the floor.]
We're - in - this - shit - together - and - you better - fucking - act like it!
[But oh god, oh god, Vriska is naked and as much as he hates her she sure is pretty, and Terezi is right there and she can probably smell how much he's furiously blushing - furiously being the key word, of course.]