Sollux is kind of assuming that Knock Out is just drinking regular energon - or he was, until the optic thing that just happened. Is this some kind of special drink? Do robots have booze?

"So what, they fuck it up and now it's your problem?" It's not a statement made in disbelief - it's more of a display of annoyance at something he can easily see happening. He hesitates a moment. "Are you guys in danger here, now?"

The only Autobot he's met is Rodimus and he didn't seem very threatening, but...