Panic! at the Disco and Sisqo joined musical forces to perform "The Thong Song" on "Jimmy Kimmel Live!"

The collaboration aptly dubbed Panic! at the Sisqo, came together to perform the R&B singers hit single from 1999 as part of Kimmel's "Mash-Up Mondays" concert series.

Panic! at the Disco frontman Brendon Urie kicked things off singing the infamous song's opening verse until Sisqo jumped in dramatically flipping onto the stage unleashing his signature high-notes and acrobatic choreography.

The throwback performance ended with the duo singing alongside each other among a sea of adoring fans.

The mash-up took place following Jimmy Kimmel Live's third music infused edition of Mean Tweets which saw Grammy award winners Meghan Trainor, Little Big Town and Ed Sheeran reading out loud some of the meanest comments fans had written about them on Twitter.

Recently, Panic! at the Disco celebrated their first No. 1 album entering the Billboard 200 charts with the release of their fifth studio album, "Death of a Bachelor" in January.