"You should be careful not to bite their cocks," Carol explained as though she was a serious teacher. "I mean, you must put it in your mouth and use your lips and tongue, not your teeth. Let me show you again."

One more time, Sebastian enjoyed Carol's mouth giving him a delicious blowjob. The wetness of her feminine mouth was just heaven. He knew his sister wasn't in love with him, but he was sure she was enjoying his cock as she must have loved a lot of guys' tools. It was strange to know that his own sister loved blowing guys. Now he knew, and he could not even...