We're just weird about bodies. Perhaps we should all try to get over that, but I wouldn't hold your breath.
All that aside, though, nobody wants to hear you talk about this. If you're lucky enough to find yourself frolicking naked with a likely female prospect, you can probably get away with it as a lighthearted, jokey thing, but do not bring it up over dinner, the way one might broach the topic of, say, S-M. People who wouldn't blink on hearing that you are fond of pain or sex parties or any other normal kink like that might never feel quite the same about you after hearing you wax rhapsodic about belly raspberries. Probably because of the association with babies, the only people whose shirts we are allowed, even encouraged, to yank up without prelude or permission to shmoozle their tummy-tum-tums, it just seems a little unseemly.
Andrea Nemerson has spent the last 14 years as a sex educator and an instructor of sex educators. In her previous life she was a prop designer. And she just gave birth to twins, so she's one bad mother of a sex adviser. Visit www.altsexcolumn.com to view her previous columns.