My first sexual act (other than stroking) was frottage with my first girlfriend. We were clothed, but my cock was so hot that I started rubbing it up and down her ass. She leaned over to feel the sensations better and I came hard, filling my shorts. Ever since, the sight of a cock rubbing between ass cheeks would enflame me. So - yes, I would love to see it - complete with an big juicy climax.