But one slip and suddenly a hand will end up someplace unintended. One lad's cock will touch the other lad's bare skin by accident. Pulses will race. Glands will overheat. Soft cocks will become hard. Horseplay will turn into foreplay.
I can't resist adding a note about spotting both of their cocks and scrotums between their legs. Seeing a man's junk from behind like this always gets my motor running.
I found this photo on the great blog Metro Dystopia, which you should be visiting regularly if you're not already doing so. To see the photo full size, please click here.