This hottie Clark Rogers is one of the bloggers at Unicorn Booty. He also runs his own XXX-rated Tumblr. I found him via this recent article on Instinct Magazine website.
Clark Rogers is a Chicago-based escort and writer. (You can also listen to his interview on Feast of Fun podcast). He posted this video, How to Perform Fellatio, on his Tumblr where he gives oral sex tips (complete with a demonstration on a dildo!)