Yeah, its small steps, even for the bull as well. Cucks can get too 'into it' even for the bulls liking. We've known our one for 4 years, plus he waxes his entire body as he competes in iron man comps, so his cock/ balls and asshole is as smooth as my wifes. I think it took abot 6 months before we started doing it (although I would have done it on the first date) and I think he was only open to it at first because my wife suggested it to get him hard again for a second round, but like most things in life, once he experienced it and how good it felt, he definitely had no issues with me tonguing his ass from then on.