Doonesbury by Garry Trudeau for June 23, 1993
Transcript:
Zonker: Sorry it all went so badly, Boopsie. Sid kinda messed up for you, didn't he? Boopsie: It wasn't Sid's fault, Zonk. He didn't make me go...I never should have agreed! I have to take full responsibility for my actions! Zonker: How come? Boopsie: It's in my nature. In a previous life, I was Harry Truman. Zonker: Truman? No kidding? So you've already been to the White House! Boopsie: Yes, and it was home, Zonk. It was where the buck stopped. Zonker: Wow...you're allowed to quote yourself like that?
Harry S. Truman died in 1972. Boopsie first appeared in the strip in 1971. The buck hadn’t stopped quite yet!