I saw one one time where this dude took a piece of leather and wrapped his nuts up like a tube, inserted his dick in a chicks ass, and fucked her puss with his wrapped nuts.
I saw a clip of a "film" where all these dudes are shitting into this like ten foot high big-assed funnel and way down at the bottom is some skank taking the mixture into her mouth and rubbing it all over her.
There used to be this porn star named Johnny Saliva who would drop a huge mouthful of spit into the chicks mouth when he was getting close to the big "O".
I also saw some B-rate German film where a dude and his dog met up with a couple who were camping. The dudes ran off with each other and the chick ran off with the dog. The guy that rented that one almost got his ass kicked in...
I saw another one where this one skinny dude was trying to fuck this behemoth of a woman. He had to be swung to and fro by six other guys just to do her. Pretty funny scene, actually.