its not that underrated its Techs highest youtube viewed song
but i dont think they perform it cause its not a "party" type of song.
It's like the 3rd most entered Tech N9ne song on YouTube. Behind Caribou Lou and Demons.
And I know he did the "THAT'S HOW I KNOW MY REAL FANS ARE IN THE HOUSE!!!" bit when the crowd recited the chorus of Dysfunctional.