9. Avril Lavigne at L.A.’s Key Club (November 3rd, 2008)
Avril gets a pass here, because it wasn’t technically her own show. The band Steel Panther pulled her up for a rendition of this Joan Jett classic, as well as power ballad “Every Rose Has Its Thorn.” Despite the band’s promises, it totally ended up in YouTube AND TMZ!
8. Ace Frehley of KISS (January 1st, 1995)
It’s a shade after midnight on New Years Day, so Ace also gets a pass for being kind of out of it.