Elliot could feel his cock twitching and throbbing, ready to cum any second now. He watched Sari closely as she slid further down and then took his cock into her mouth. The way her warm mouth enveloped his cock felt amazing, the way she sucked and licked at the throbbing cock was enough to push him right to the edge. "Big sister...I'm cumming!" He moaned the words out, tossing his head back in ecstasy. Every muscle in his body tensed up and relaxed in a split second as he came hard, shooting his warm seed into his sister's mouth. The first load to spurt out from the tip of his cock was rather big, then it was followed by two more smaller, more average sized shots of his cum as aftershocks from his orgasm. Finally after a few moments he was done, the last of that load spurting from his cock, the erect manhood throbbing and twitching. A huge smile spread it's way across his features as he stared down at his sister. "Wow..." Was all he could manage to say, still smiling deliriously like a bit of an idiot.