I reached into his man-panties and grabbed his cock.
It was huge! It would split that poor sweet girl in two.
I couldn't let that happen.
So I made a ring with my thumb and index finger and pulled his foreskin towards his body, exposing the head of his penis. The foreskin was especially thick, so the head of his penis was especially sensitive.
"Hey, what are you doing?" he said.
"I'm going to show you a good time, love," I replied. "You're not going to say no to a chippy like me who is saying yes, are you?"
"N...NO! Of course not!"
"Your mates gonna cockblock you?"
"They'd better not!"
"Then let's have some fun. Don't be shy. I'm not."
I started rubbing his cock under his man-panties, all the while keeping the palm of my hand slippery with his pre-cum that leaked out of the piss-slit.