I was with a guy once who was really into sph; he was about 4-5 inches erect. I was really lousy at it though. It is just not in my dna to insult or humiliate someone, even in role play. I would not want to be in that situation again; I think we would have had a great sexual encounter because he and I really clicked in the bar and at a picnic, but he was just so fixated on sph, that the night was ruined for me. No judgments from me, but just not in my repertoire!