Another theme I love is muscle guys bottoming. We all know the expression "Alpha male" and what an AM represents: muscular, confident and dominant. A lot of the times he will be hairy, further exemplifying his masculinity. So when an AM sheds that persona and opens himself to explore his more submissive side I find that completely erotic.
In this scene (sorry, not an internal) two hot guys (BF's?) have a hot fuck in the sun. The bottom, a beautifully built man, completely submits to his mate. Their moaning, panting and sweating are like two animals in heat. At 9:30 we see the top fully mounted on his lover grinding his cock deep into his belly as he lays there accepting the top's hard cock into his muscled body. The energy the top expends to make love to his bottom is amazing. 13:25 has the bottom whimpering and at 16:30 the top brings his mate over the top.
Totally hot at 17:15 where the top, covered in his lover's seed, flips him over, wiping the fragrant load all over his body and using it for lube, with his thick load shooting out of him a few minutes later.
musclebottom.mp4 at Streamtape.com