Watch Panic! At the Disco and Sisqo Perform “The Thong Song” [VIDEO]

Panic! At the Disco are still claiming relevance a decade after the release of their first album as the band's latest "Death of a Bachelor" debuted at #1 on the Billboard Charts and #2 overall here in Portland! Someone else who isn't so relevant these days is Sisqo, however his classic song still holds up in 2016.

Jimmy Kimmel's "Mashup Mondays" series continues as he pair up two unlikely acts to perform. In recent history we've seen Weezer and ZZ Top (Weez-Top), REO Speedwagon and Imagine Dragons (REO Speed Dragons), Warren G and Kenny G and most recently as you saw above, Panic! at the Sisqo.