I have..only once. The clip that did it(and I'm trying to find it again) seemed like a totally genuine amateur clip of two guys in the washroom. A cam just resting somewhere in the washroom filming it. They were both cute and seemed like the boys next door...one looked a bit older..one was probably 16-18..other was probably early 20's. The description of the clip was something like "sisters bf f me in the washroom". Really short clip..under a minute but i kept refreshing it...the sisters bf had a bit of a smirk..and it was just totally hot...i love the fantasy but everything together just made it seem genuine.