Too much pizza can lead to that too.
https://www.imdb.com/title/tt0637444/trivia/
At the time this aired, John F. Kennedy was president. When Lucy walks awkwardly into his office while stuck in a small rocking chair, a voice offstage comments that he’s glad to see that he’s not the only person who likes rocking chairs. Kennedy often used rocking chairs to help ease his back pain.