They don't stop, man, they're stuck on my cock all day long.

You can complain, man... Some don't fuck and you are lucky enough to be able to fuck your girlfriend and her sister who is more of a whore than a hen hahaha... Look how hot the sluts get when they are with him, eating the boy's cock between the two of them and then getting fucked in a tremendous, very kinky and pleasurable porn threesome...