There's a secret The Big Bang Theory Easter egg in the Young Sheldon season 5 finale and it isn't Sheldon's Flash shirt.

But fans of The Big Bang Theory were treated to not just one fun reference to The Big Bang Theory, as the Young Sheldon season 5 finale also features a secret Easter egg about Sheldon's future.

George and Mary's eldest child accidentally got his girlfriend pregnant, resulting in a slew of problems for the family.

But most importantly, the outing finally shifts the comedy's focus back on Sheldon after sidelining him for a while.

In the episode titled "A Clogged Pore, a Little Spanish and the Future," Sheldon starts fearing the future, but after a sweet pep talk from Missy, he settles down.

During his conversation with Missy, Sheldon runs down everything that he's excited about in the future and every single one of the things he lists ultimately came true in The Big Bang Theory.

Overall, the Young Sheldon season 5 finale isn't as eventful as many would have expected. Granted, there is some significant development with other ongoing plotlines

but much of the episode focuses on Sheldon and his fear of the future. It's somewhat reminiscent of the season 2 finale, which directly tied into The Big Bang Theory finale.