Photo by Kevork Djansezian

twenty one pilots accepted their first Grammy Award without pants at Sunday night's ceremony.

While accepting their win for Best Pop Duo/Group Performance for their hit "Stressed Out," the duo explained that years ago they first discussed their musical endeavors with fans, while hanging out in their underwear. They vowed if they ever won a Grammy, they would accept it in just their shorts.

Watch them keep their promise below.