In June 1980, “Weird Al” Yankovic first performed “Won’t Eat Prunes Again” on The Dr. Demento Show. Shortly after, he rocked it live at Cal Poly. Audio evidence above.
(via r/ObscureMedia and Weird Al Wiki)
That was such a dirty trick
Boy, it really made us sick
Well it looks like we’ve been done in by the prune
Still the memory lingers on
I been livin’ in the john
‘Cause I’ve had the runs since Monday afternoon
