A reader, with bumper stickers on his mind, says, “Best one I ever saw was back in the ’60s when Ronald Reagan was running for governor of California against Pat Brown: ‘If It’s Brown, Flush It.’”

Gross — but the second-nastiest, the second-worst ad of all time, in my opinion, was run against Reagan by Brown. The governor had a little black girl on his knee, and he said, “You know, it was an actor who shot Lincoln.”

The worst ad of all time — the most despicable? The “daisy commercial,” of course.

P.S. I remember when Jerry Brown, this year’s Democratic gubernatorial nominee, was a serious presidential contender. He was then governor — a boy governor. He was on The Tonight Show one night, and Johnny mentioned that the governor’s mother was backstage in the green room: “knitting an oval rug.”

Hey, oval rugs have been the news lately, haven’t they?