@emdeesee Dundracon, I think. My then partner and I (we were in out twenties) played a scenario in Call of Cthulhu written and run by Greg Stafford (then, I think, of Chaosium), that was based on the song "Elvis is Everywhere" by Mojo Nixon: https://www.youtube.com/watch?v=mpb4ZAAP6Z4

(He even made us get up and dance to the song.)

"Elvis is in your Mom!"