Gymnastics Briefs, Bundies or Underwear

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GYMNASTICS – Tagged Gymnastics Undergarments– Relevé Dancewear

So I'm in gym class and when I run my penis slips out of my underwear into my shorts and I constantly have to fix it. How do I prevent it?

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Tom Brady Wears His Namesake Brand's Boxer Briefs for Twitter Selfie

Hipster vs Brief Underwear: Finding Your Ideal Style – Q for Quinn™

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