I don't know what Mad Thumbs are and to be honest, I don't think I'm going to like what I find if I look on Urban Dictionary. Anyway, this porn tube is a place that offers plenty of clips for you to enjoy and has a category for gay clips. Note that it's not a separate filtered section on the site, which means you can't refine the gay material down to categories like gay cumshots, gangbangs or webcam shows. You can search for these, but it doesn't give you the most accurate results.
Filtering options for the results include date uploaded, number of views, highest rating and longest scenes. Each archive page houses around 50 scenes and there are 1844 for you to go through. I did the monster math and it comes out to just over 90,000 clips. Pretty damn good for a tube that isn't devoted to gay scenes.
New updates are a little slow, but they do still provide fresh gay videos from time to time, so I guess that's good. Anyway, I've said all that needs to be said: check this place out and get some free gay porn videos right now.