A woman on TikTok went viral when she explained to viewers how she unexpectedly discovered a way to get a free shirt at Disney World.

The key component? Showing a little "underboob."

The TikTok video, which has been viewed by over 23 million people, was posted by Amanda DiMeo.

In the clip, DiMeo, clad with the classic mouse ears, filmed herself while walking through Disney's Magic Kingdom.

She then explained the surprising turn of events she had just encountered.

"Okay guys, new Disney hack. If you're wearing a shirt that shows a little underboob, they'll write you a ticket when you first enter...so you can get a free shirt at the nearest gift shop."

"I just got a $75 T-shirt just because I was wearing a shirt that was exposing my underboob a little bit. So, yeah, if you want free Disney shirts, that's the hack."

The video then cut to DiMeo proudly donning the new shirt in a bathroom mirror selfie.

Viewers applauded her for sharing the discovery.

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Others imagined some unsettling alternatives.

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But as with so many hacks that take advantage of hyper-efficient corporations, people did worry Disney would come across the free shirt hack and clamp down on the policy.

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So while we're by no means experts on Disney policy, it's safe to say the underboob maneuver is likely not 100% foolproof.