There was a certain sense of power, having a man's testicles in their hand, that Robin enjoyed. They could either caress or tickle his scrotum and perineum, gently roll the soft balls between their fingers or squeeze them harder to inflict some level of pain, maybe even ruin his orgasm if they timed it right. Their thumb positioned on his sphincter, poised to push forward, into that tight opening they were sure had never been penetrated before, was another source of power they could use. If they asked permission though they were sure it would be denied so perhaps it was better to apologise afterwards than to ask permission. They knew quite well that most males actually enjoyed some level of anal penetration, due to the location of the prostate, whether they would admit it or not.<br/><br/>They tugged ever so gently on his balls while watching his cock go in and out of Abigail's soaking wet cunt. It was quite mesmerising and almost impossible to take their eyes off of but somehow  they managed and looked up at Xavier, seeing the pleasure and determination spread across his face, a pleasure they hoped would soon intensify, perhaps to the point of shooting his seed deep into his wife. They gave no other warning than a mischievous smile before gently pushing their thumb against the sphincter, letting it take its time, giving him time to call Cinnamon if he wasn't ready for this step in his sexual evolution. They felt the muscle start to open up around their thumb and kept their eyes on his eyes.