Over the years, Jim Yelenick has fronted various outfits -- Jet Black Joy, Zillion Dollar Sadists, a Turbonegro cover band and, most recently, a band called Invasion. As a frenzied frontman, the guy's never been afraid to expose himself, if you know what we mean. And that punk energy spills over into his Friday-afternoon acoustic sets at the Larimer Lounge. A longtime Clash fan (he's even gotten drunk with Joe Strummer at the Lion's Lair), it's only fitting that that band's songs make up a majority of his happy-hour repertoire. When Yelenick's not rocking the casbah, though, he's performing his set staple -- an acoustic mash-up of the Dead Kennedys' "Holiday in Cambodia" with Madonna's "Holiday." By the end of happy hour, you can count on a few things: that Yelenick will be as snockered as everyone else, and that he'll be making up lyrics, leading a sing-along of Irish drinking songs and playing tunes by the likes of Steve Miller, the Boomtown Rats and Britney Spears.