He started to lean forward a bit and put his hand on the wall, while his other hand moved and was now resting on the top of Mels head, a motivation for her to continue what she was doing now, as her tongue and mouth moved all over his cock, giving him much needed pleasure, he needed to cum at least once, the idea of his sister sucking him off turned him on to quite an extent as her fingers played with his rather tense balls, they needed to cum, they hurted just a little bit from all the teasing of the day.<br/><br/>His balls shrunk the tiniest bit, and his cock leaked more precum, and was throbbing rather hard now, a sign that indicated he would orgasm, or that he was quite close to him. ''Mhm...good girl...keep going....'' he said, as he could feel her tongue lapping at the the vein on his backside, where had she been practising? She certainly knew where the pleasurable spots where, He looked down at her, ans could see her jiggling breasts, a rather pleasant sight as they moved about, he regretted that Mel did not have more lactation to share with him, but looking at her breasts was enough for now.<br/><br/>After quite some time, his head arched backwards, and that was accompanied with more moans. ''Fuck...I'm gonna...'' He said, as a warning to her. His cock then twitched, and his ball shrunk, as he reached his much needed orgasm, his mind going blank for a second as always, as his cock gave spurt after spurt of his seed, giving a twitch with each spurt.