Warning! SPOILERS for Young Sheldon season 5.
The appearance of Amy's (Mayim Bialik) dad in Young Sheldon is not a plot hole, unlike George's cameo in The Big Bang Theory. CBS' comedy wraps up season 5 with a special episode that mainly focuses on Sheldon (Iain Armitage) and his fear of what comes ahead in his life. With that, Young Sheldon season 5 finale also brings in two special guests, Penn and Teller — the latter may be familiar with The Big Bang Theory viewers as he also played Amy's father, Larry Fowler.
In theYoung Sheldon season 5 finale titled «A Clogged Pore, a Little Spanish and the Future,» the show shifts the focus back on Sheldon following weeks of sidelining the boy genius. After getting his first pimple, Sheldon becomes obsessed with the idea of hitting puberty and developing a fear of growing old. George (Lance Barber) and Mary's (Zoe Perry) current predicament aggravates his trepidation. In an effort to interject some humor into an otherwise darker Young Sheldon episode, CBS brings in the magician duo to personify Sheldon's pimple, with Teller playing the voice of Pus while Penn brings Acne to life.
Related: Young Sheldon Season 6: Everything We Know
Since Teller already exists in The Big Bang Theory franchise as Mr. Fowler, there's an argument that his appearance in Young Sheldon as Pus breaks continuity. This is supported by the fact that Lance Barber, who plays George in the CBS prequel, had previously appeared in The Big Bang Theory as Leonard's bully, Jimmy Speckerman — something that is deemed a plot hole. That being said, Teller's Young Sheldon cameo doesn't actually create any inconsistency because the character he plays is imaginary. Pus and Acne only appear in Sheldon's dreams and don't have
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