what is snowballing
Rating Newest Oldest. Best Answer: Snowballing or semen swapping is a human sexual practice in which one person takes into their mouth the semen of another person, and then 'swaps' it back and forth with another person through kissing or spitting.Source(s): http://en.wikipedia.org/wiki/Snowballing...ukmale65000 Â· 10 years ago. Thumbs up.est Answer: Snowballing or semen swapping is a human sexual practice in which one person takes into their mouth the semen of another person, and then 'swaps' it back and forth with another person through kissing or spitting. Source(s): http://en.wikipedia.org/wiki/Snowballing... ukmale65000 Â· 10 years ago. Thumbs up.