I was lucky enough a few months ago, my friend who I play with invited another guy to join us. My goal was to suck them both off at the same time. When I got my chance to be between them, it was sensational going from one to the other, and then having them both in my mouth. My friend was great - pushing my head down on the other guys cock, then telling him 'I told you he was good' If you get a chance - do it!