.....I would say go with a thong or nothing! But what do I know, I don't bike! At least when I used to do a aerobics at the gym, in those spandex outfits (a long time ago, I must admit), that was the case....FWIW...... 8-) At 04:01 PM 9/16/2008, Sandy Olson wrote: >Okay, guys... > >I'm going out on a limb here and will probably get a ton of >wise-guy/gal answers but here goes anyway: > >Are you supposed to wear underwear under those Spandex biking shorts?