Found this cool picture of Dave Grohl channeling his inner Alex Van Halen and playing drums wearing this low budget Van Halen shirt made with a Sharpie.
Looks like Grohl made the shirt for inspiration during a Tenacious D recording session. Here’s another photo of the Van Halen logo shirt with Jack Black and Kyle Gass.
Grohl and the Foo Fighters are big VH fans. Check out this 2016 video from the feelnumb.com YouTube channel of Grohl along with Taylor Hawkins and his cover band Chevy Metal covering David Lee Roth era songs “Panama & Ain’t Talkin’ Bout Love”.