I wear perry ellis spandex boxer briefs a good bit, not always but a good bit. I dont know if they still make the design i wear but you might want to look into that for support and great comfort. I found a pair about 4 years ago and used them jsut for the gym as my dick would hang out on the bikes when up peddling or bounce arround to much when running and I hated tighty whites. After i tried the first set i went back and bought 15 more. They are a little pricey though, I think i paid $20 a pop for mine. Now im not as endowed as some of you but, they are worth a try. I dont know my flaccid measurements either, but you can tell they restrict well, and ill vouch for the comfort. Image - TinyPic - Share the Experience!