Remus chuckled and slid his hand down to cup Severus' arse. Humour from Severus Snape at this point, in this situation, was the best sign he could possibly get that things would be all right and that Remus should push away his fears and just enjoy.
"You can shout all you want. After breakfast, but I'm afraid I can't promise that I'll be fleeing in disgust at any point, under any circumstances." Remus slowly let his tongue slide over Severus' neck, ending the lick with a kiss, just to emphasise his complete lack of anything that even remotely resembled disgust. "I'm not that easy to get rid off, Severus."