John had grabbed a pair of his dad's size large tighty whities and darted quickly to his bedroom. He put his dad's feet through the underwear and brought it up to his dad's package and hairy globe of an ass. John checked out his new mixed bode in the mirror. He had to admit that seeing his father's powerful hairy legs and ass was a turn on, and strangely it didn't matter that these parts didn't match his trim and smooth upper body.
Looking at how voluptuous his new ass looked in briefs made his dad's dick strain even harder in the underwear. John broke out his secret dildo he keeps under his bed, and in a few seconds had slipped the dildo under briefs and was fucking his dad's tremendous ass and stimulating his dad's prostate.
Since John's father was predominantly straight he had never felt comfortable putting anything up his ass. John was feeling the virgin ride of his own dad's hole! The thought made his dad's cock start cumming without John having even jacked it off.
"Well," said John to his lower body, "we'll have to do that more often for you." His new cock twitched and John reached inside his tighty whities to taste some of his father's seed. "I'm thinking gay club tonight," said John, eager to give his dad's hole another ride.