Post Mortems

Young Sheldon EP on Season 5 Finale's Other Big Bang Easter Egg: 'It's Not a Permanent Change, But...' — WATCH

Is it possible that Young Sheldon looks too cool now?

The Big Bang Theory spinoff delivered not one, but two Easter eggs during Thursday’s Season 5 finale. The same episode that enlisted Penn and Teller — the latter of whom recurred as dad to Mayim Bialik’s Amy Farrah Fowler on the mothership — culminated in the boy genius making a radical change. On the precipice of adulthood, Sheldon swapped his signature button-down shirt for his very first graphic tee: a red crewneck with a Flash emblem, not unlike the one he frequently wore on Big Bang.

Meanwhile, as Sheldon struggled with the onset of puberty — which led to a nightmare we won’t soon forget! — George and Mary grappled with unemployment, and Georgie and Meemaw ran into trouble at the U.S.-Mexico border.

Grade the finale via the following poll, then keep scrolling for our post mortem with series co-creator Steve Molaro…