Tampa, Florida - If NFL fans knew that legendary athlete Tom Brady would celebrate his post-retirement life by showing off his hot, athletic body, they probably wouldn't have minded a retirement much sooner!

On Monday, the 45-year-old football icon showed just why age ain't nothing but a number!

Nearly breaking the internet, Brady stripped down to brown flesh-tone underwear, sending social media into quite the frenzy.

"Did I do it right? @edelman11 @gronk," he captioned the NSFW picture, tagging his former teammates and close friends, Julian Edelman and Rob Gronkowski.

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While Edelman and Gronk have yet to respond, fans are positive that Brady did it just right!

The former Buccaneers quarterback showed off his biceps, pecs, and chiseled abs, placing his hand over his, ahem, jewels.

Brady tweeted the picture as part of a former bet he made with his men's apparel company, Brady Brand, back in June.

Last summer, the seven-time Super Bowl champion tweeted that he would recreate snaps of models wearing his brand's underwear if his retweet received at least 40,000 likes.

The tweet surpassed over 48,000 likes on Monday, prompting Brady Brand to remind the former quarterback of the old bet. Thankfully, the athletic heartthrob showed up and to show out in a big way!

Brady followed his selfie up with a tweet featuring a direct link to his brand's flesh-tone underwear that he sported in the pic. Now that's marketing!