Indeed, there are even sex advisers who abhor cum swapping. It may sound gross, but it is not as gross as it seems reading about it than when you watch it. The scene finally ends with the ejaculator getting back his cum. Each pass of the cum increases in size, what with the man juice plus the saliva getting passed around. For the newbies out there, cum swapping is the sexual act – usually towards the end of a porn film if you watch porn – that shows a man cumming into his sex partner’s mouth, kisses that sex partner, transfers the cum into a third person, until all sex partners in the orgy get their taste of the man juice. Are you familiar with the term “cum swapping”? For sure, all porn fans have witnessed this amazing act, though it remains to be seen if they do know that it is called cum swapping.