"What — " Marcus blinks, face going slack for a moment. A couple of things: first, if this wound can get infected, then why is he doing this in a bathroom, neither of them wearing gloves, and second, shit, why didn't Marcus think about that before this, actually?

The slight moment of confusion knocks him off balance, makes him a fraction of a second late with the towel, but then he's clamping it tight to the hole left and scowling, complaining, "Jesus Christ, love — "

No, he shouldn't get pissed off with Midnighter for pulling what looks like part of a traintrack or maybe some construction debris out of his shoulder too quickly. That's not fair. Still, he's prickling, has to exhale through his teeth. Then, softer, he murmurs, "Right. Alright. You're gonna be okay, yeah?" He eyes the bottle, guessing it's not a bog-standard antiseptic. Or maybe it is, maybe that's all the headstart Midnighter's augmented biology needs.