I had a memorable meet in a similar scenario but with sunscreen.
An older guy and I used to meet at a cruising area find a quiet spot and "sunbathe" amongst other things😉
One particularly hot day we had been playing for while and I climbed on top of him, straddling his body, with my cock rubbing his belly.
He was playing with my nips,and I think the combination of warmth, sweat,suncream and the friction of my cock on his belly built up, until I had what I can only describe as a full body orgasm without touching my cock.
The intensity of the moment was indescribable and I literally covered his body in cum.
I'm not normally a heavy cummer, but this was a stream of jizz☺️
Id love to recreate the moment but I don't cruise any more.
Perhaps a long overdue trip to PDI might bring me luck