Annual 'Cupid's Undie Run': Running in your underwear for a cause

Cupid's Undie Run in Washington, D.C. on Saturday, Feb. 9, 2018. (Image: Kristina Spicer, Circa)

In the nation's capital and across the country people are stripping to their skivvies to take part in Cupid's Undie Run.

Watch Circa cover Cupid's Undie Run live! (Warning live video could contain profanity, nudity or adult content.)

In D.C., scores of people showed up for "the nation's largest pantless party." Revelers prepared with some liquid courage, some stretching and then hit the rainy, cold streets of Washington to run half-naked mile.

The annual undie run is not just a way to show off your finest Valentine's Day attire, it's hosted by Cupid's Charity to raise money for Neurofibromatosis (NF) research. So far the charity has raised more than $14 million to find a cure for NF, a genetic disorder affected 1 in every 3,000 children born.

The annual event started as a crazy idea, it's founders say. "In 2010, a group of do-gooders dropped their pants and ran through the D.C. cold to raise money for research to help end neurofibromatosis." Since it's inception, the group has raised more than $14.5 million.

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