Chuck Lorre’s 700th Vanity Card Pays Tribute to ‘Young Sheldon’ at 100

For his landmark 700th vanity card, Chuck Lorre chose physics. Lorre’s 700th card happened to coincide with the 100th episode of “Young Sheldon,” which he co-created and executive produces with Steve Molaro. And so, given the scientific nature of the character of Sheldon Cooper, it made sense to share a physics equation that adds up to… 100.

Immediately following “Young Sheldon” on CBS this Thursday night was another show Lorre executive produces, “United States of Al,” which ended with Lorre’s 701st card. Which, naturally, poked fun at the 700th card:

Lorre’s self-penned vanity cards have been a signature part of most of his series for 25 years, starting with “Dharma and Greg,”…