This is inspired by the discussion in the Ladies' Lounge thread "
Spit or Swallow?" about guys having done this or enjoying it. I did a search and couldn't find anything else on it. For those of you not in the know, snowballing refers to the act of swapping semen between you and a partner after ejaculation. Its called a snowball first obviously because it's whitish blob, and second because as you swap it back and forth, more spit is added to the blob and it grows, like how you can make a giant ball of snow by rolling it around and packing on more.
In the fine TFP tradition I'll start off, I've never done it but it sounds pretty hot. I
have tasted my own semen on occasion and it's not so bad; I can think of several alcoholic beverages off the top of my head that are worse.

But we could start a whole separate thread on that...
Also, let me take the opportunity to encourage people to post and elaborate on their opinions since I know polls tend to cause people to click a few times and be done with it.