Many of you fancied yourselves experts when it came to telling the difference, but only one of you could win our Masturbation or Sex? contest. So congratulations to kmbear, who scored an astonishing ten out of ten on our little quiz; we'll be contacting you via your Fleshbot commenter page to let you know how to claim your fabulous prize. Everyone else can click through to see the answers, which may come in handy the next time you're asked to distinguish between hitting it and, uh, wacking it. (Hey, you never know.)
. . .
1. Sex
2. Masturbation
3. Sex
4. Masturbation
5. Sex
6. Sex
7. Masturbation
8. Sex
9. Masturbation
10. Masturbation
(Oh, and in case you were wishing this contest had a little more peen ... stay tuned for the Masturbation or Sex: Gay Edition, coming soon!)