We'd never heard of a balloon fetish before our friends at Urlesque tipped us off to the bubble girl trend. And since 70 percent of you were kind enough to let us know that YouTube workout videos are not porn, we're hoping you can help us figure out what the hell is going on with ballooning.

Balloon fetishists, or "looners," find themselves sexually aroused by the rubbery objects, be it from the color, smell, sound and/or the act of inflation. A cursory Google search brings up a lengthy list of Web sites we can't link to showing naked women straddling giant balloons, blowing up balloons or rubbing them against their bodies like some sort of filthy, X-rated birthday party.

And, of course, YouTube features a wide assortment of videos in which women sexily pop balloons, the climactic event for those who call themselves "poppers" ("non-poppers" prefer not to destroy the balloon).

Check out some "loon"-y video clips after the jump and let us know if balloon fetish materials are porn.