How can a guy suck a kilometer of dick?  20 centimeters at a time, of course!  Benjamin Dukhan (a.k.a. The Burger Girl) explains all as he scandalizes city streets as a "Kilometer Sucker."  Don't miss the moment, at about 3:07, when Benjamin surprises a jogger by lunging at his cock like a rabid dog.

Meanwhile, our other favorite bearded gender-fucker, Pierre Pascual, sings about the desire to fill a mouth with cum as the point of no return approaches.  Even if you don't speak French, the visuals should be plenty: