These images are all from a great Tumblr called Hunky Dorian which features steamy erotic shots of sexual activity. Be forewarned if you follow the click-through that you'll also find women engaged in sexual activity on that site; there's every possible combination: MMM MMF MFF MM MF FF and more. Dorian has an insatiable libido.
As always, photos are larger than they appear below. Click here to download a zipped file of twenty cocksuckers at work, including the lads shown below, or here for an online gallery.