There's nothing like a mother in a white two-piece.
After his swim meet Tom's mother had let him watch her use a vibrator on herself. And as she was climaxing she had reached over and grabbed his cock. After a few pulls he had unloaded right in his Speedo. He couldn't believe his mother had jerked him off while she was coming right in front of him. Afterward she had taken off her wet panties and traded him for his cum filled Speedo. He pulled on her panties and with his cock still throbbing went back to his room.
The next morning it was as though nothing had happened. Tom decided not to bring up the matter. He had put on her wet panties when they had traded and was still wearing them the next morning. The sheer panties were pulled tight over his stiff cock. He wore the panties all day only cumming in them three times. He had wiped his cum off each time but they were really sticky as they slid over his cock.
The day passed without a mention of Friday night.
On Sunday morning Tom woke up late. He had been dreaming about his mother and his cock was straining to escape his mother's panties. It only took a couple strokes and he sent another load of cum into his mother's panties. Her panties were getting a real work out.
When Tom went down to the kitchen he noticed his mother was sunning herself by the pool. He decided to join her and went to put on his swim suit. Taking off her sticky panties he used his swim suit on. Not his Speedo, he rarely used his it except for swim practice. Besides, he had given it to his mom on Friday night and she hadn't given it back.