After several orgasms as a man with breasts Sam's new assets had grown to an adorable D-cup size. As his sister Rebecca was only 16 years old and had breasts somewhere between A and B he found it difficult to wear her bikini top.
After several trials he could squeeze his boobs into the cups of the bikini but was afraid that they might come off any time.
He wrapped his sister's sun frock around his hips and headed to the parking lot. On his way he earned some astonished views from people passing by but nobody seemed to recognice tha underneath the frock he was wearing nothing but a cock.
As hd reached his car the next problem occured. Whenever he wanted to fasten the safety belt his tits came in the way. Sam wondered how girls could manage to use those belts witout obvious difficulties. Eventually he decided to go without fastened safty belts. He hoped that no cops would come across him on his way. Anyhow he didn't have a drivers licence to match his body.
He returned home and was reliefed to find the house empty. He made his way into his room and relaxed on his bed.