Yesterday, just days into his new job in the United States Senate, Al Franken finally did what we’d all been waiting for: He cracked a joke. And a pop culture-themed one at that! While questioning Supreme Court nominee Sonia Sotomayor, the former SNL-er asked her about Perry Mason. Earlier in the proceedings, Sotomayor had mentioned how influential the classic television show from the 1950s and ’60s had been in her decision to become a lawyer. She’d also made reference to a bit of TV trivia: That Mason only lost a single case to his opposing counsel, prosecutor Hamilton Burger. A fan of Mason himself, Franken asked: “What was the one case in Perry Mason that Burger won?” When Sotomayor couldn’t remember, Franken cracked: “Didn’t the White House prepare you for that?” It wasn’t exactly Stuart Smalley, but how cool was it to see a bit of levity injected into the heavy-duty hearings?

Check out the video below. Can any of you answer Franken’s question? In which episode did Mason lose his case?