Definition - What does Cum Swapping mean?
Cum swapping is when a woman transfers a man's ejaculate from her mouth into the mouth of another person through a kiss. Cum swapping often takes place during a threesome.
Kinkly explains Cum Swapping
The term cum swapping denotes gender as it applies particularly to the transfer of semen between the mouths of two people. It is similar to the practice of snowballing in which one woman holds the semen of multiple men in her mouth.