Duo

Neither of them get hard in this clip. No cocks enter any orifices. Yet I found this video so wildly erotic, proving it doesn't have to be hardcore to be hot.

With that said, if I was one of these blokes, I don't think I could remain flaccid through this kind of contact. I would be achingly hard, that rigid sort of erection you get where you can feel the throbbing pulse in your phallus and it actually twitches a bit in rhythm with your heart.