A wank between buddies under a canvas

These two buddies quietly start by polishing each other's dicks. Not that they're gay, but they get a plow out of seeing their buddy's filled balls being shaken up and down. One of them goes further in the adventure: he will impale himself on the zgeg of his colleague. It doesn't seem to bother him in the least. That's how it sometimes gets out of hand between straight guys.