"In any other era, dogs wouldn't have pissed on me," he says. "Thank God for Mick and Keith," who helped make lanky, messy Englishmen cool. He's referring to the Rolling Stones, of course.
Now in his 60s, Rock remembers the '70s well. Or, parts of them. And it goes without saying that the times have changed.
"The world is swamped with media today," he says. "I go to an event and I get photographed. Shoot the bloody photographer? What the hell is that about?"
On a recent night in Washington, D.C., for example, the cameras click incessantly (guilty) as Rock gives a few words at the opening of his aptly titled traveling photo show, Rocked. It originated in New York City, and it's hosted and produced by the W Hotel chain where, these days, Rock can be found shooting live concerts.
"Back then," Rock says wistfully in an interview the next day, "well, it was the age of sex, drugs and rock and roll, of course."