[John keeps the lead as they surreptitiously make their way to the common room. Maybe later he'll revel in being the leader for once, but right now he's focused on getting them away from the prying eyes of any potential whistle-blowers.]

Didn't your mum ever tell you breakfast is the most important meal of the day? Gives your brain energy and all. But sure, that sounds good to me.

[He peers back over his shoulder to pin Sherlock with a Look.]

We can have breakfast together every morning if it'll keep me from having to do this stunt every day.