John Stamos John Stamos

Have mercy.

John Stamos' Full House character Jesse Katsopolis will reunite with his band Jesse and the Rippers on Friday, People reports. The group will perform on Late Night with Jimmy Fallon, and we can only assume one of the songs they'll play will be the theme to the iconic sitcom.

Stamos posted an Instagram video of himself singing the Full House theme Monday. "Never thought I'd be singing THIS song," he joked.

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This isn't the first time Fallon has staged a reunion performance of a fictional band. In 2009, Saved by the Bell's Mark-Paul Gosselaar performed the classic Zack Attack hit "Friends Forever" with The Roots.Are you excited for a Rippers reunion?Late Night with Jimmy Fallon airs weeknights at 12:35/11:35c on NBC.