Last year, Glanville revealed to Andy Cohen that Butler was the most famous person with whom she’d hooked up, but when a paparazzo subsequently asked Butler about her story, the actor replied, “Who’s Brandi Glanville?”

Ouch.

Butler cleared things up during his appearance on Stern’s show, confirming that he and Glanville did sleep together — only he never learned her full name, or knew that she was on “The Real Housewives of Beverly Hills.”