Fans got a little more than expected during Weezer’s set at Burgerama Festival this past weekend when for the first time ever, Rivers Cuomo’s dad, Frank Cuomo, joined him and the band along stage to perform. Although Mr. Cuomo has been the subject of quite a few Weezer songs, such as ‘Say It Ain’t So’, in the 20+ years since the founding of Weezer, he has yet to join them on stage. He joined the guys during their performance of hit single ‘Back To The Shack’ off of the band’s latest album, ‘Everything Will Be Alright In The End’. Rivers even change the lyrics of the last line in the first verse from ‘Maybe I should play the lead guitar and Pat should play the drums’, to ‘Maybe I should play the lead guitar and my dad should play the drums’. Check out the full concert video below!