[Once Ingo seems actually prepared to do it Vicious does helpfully open his mouth around the tip, looking up at Ingo with amused eyes.

He's distracted with a grunt when Ingo's cock hits the back of his throat, but he still has no gag reflex, and as the head slides further down it turns into a muffled moan. Once Ingo has thrust all the way, Vicious sucks lightly and leans in to take a few more millimeters until he really physically cannot go any further, his lips wrapped tightly around the base of Ingo's shaft. His eyelids flutter as he lets out a low sound of satisfaction.]