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Dark 'Big Bang Theory' Fan Theories That Will Mess With Your Head  

Zack Howe
109.7k votes 22.4k voters 1.8M views 15 items

List Rules Vote up the most twisted theories about 'The Big Bang Theory.'

Weird TV fan theories can be extremely entertaining - maybe Saved by the Bell is Zack Morris's dream, or That '70s Show is a sequel to Happy Days. While some of these theories are fun, others are seriously dark, such as these Big Bang Theory fan theories. While not all are terrifying, most are at least peculiar. Some of these theories try to explain Big Bang Theory characters, such as why Raj seems to have selective mutism or why Bernadette's character grew angrier with each passing season.

Whatever the theory - and based on how messed up some of these hypotheses are - there must be a lot of fans out there who think The Big Bang Theory is super creepy. Here are some of the weirdest and darkest fan theories about the hit show.

1
Sheldon Is In A Mental Institution, And The Show Only Takes Place In His Head
Sheldon Is In A Mental Institu... is listed (or ranked) 1 on the list Dark 'Big Bang Theory' Fan Theories That Will Mess With Your Head
Photo: Warner Bros.

Redditor /u/thetheoryguys claims Sheldon is in a mental institution, perhaps even for offing his father and his father's mistress. They go on to say that both Sheldon and Leonard are in this Los Angeles facility - Leonard was admitted there after being lobotomized by the government for giving up secrets to North Korea. The show's other characters are also residents or doctors there.

According to the theory, Penny is a failed actress who turned to substance use and sex work before ultimately landing in the facility; Amy is a neurologist who works at the institution, and she feeds into her obsession with Sheldon by studying his brain; Raj is a doctor there instead of an astrophysicist, at the behest of his parents; and Howard is the facility's "caretaker" who occasionally engages in intimate activities with Raj because he can't seduce women.

Does this theory disturb you?
2
Howard's Mom Doesn't Exist
Howard's Mom Doesn't Exist is listed (or ranked) 2 on the list Dark 'Big Bang Theory' Fan Theories That Will Mess With Your Head
Photo: Warner Bros.

Redditor /u/Pick234 claims that Howard's mother doesn't actually exist: "Howard [is] just crazy and lonely and uses ventriloquism to speak for her. Also, all of his friends like him so much and either A, believe him or B, don't want to break it to him that she isn't there, either out of love, or fear that he would snap."

Does this theory disturb you?
3
Bernadette Is A Cyborg Created By Howard
Bernadette Is A Cyborg Created... is listed (or ranked) 3 on the list Dark 'Big Bang Theory' Fan Theories That Will Mess With Your Head
Photo: Warner Bros.

Jim Parsons, who plays Sheldon, responded to a few of these fan theories in 2017, one of which claims that Bernadette is a cyborg created by Howard. The theory is based on three assertions: Howard is a world-class engineer, Bernadette shares many traits with Howard's mother, and "normal" women don't like Howard.

The third note is perhaps the theory's strongest piece of evidence. In response, Parsons asked a thought-provoking question: "Don't we all build our own romantic cyborg?"

Does this theory disturb you?
4
Penny Is A Spy
Penny Is A Spy is listed (or ranked) 4 on the list Dark 'Big Bang Theory' Fan Theories That Will Mess With Your Head
Photo: Warner Bros.

Redditor /u/numbertheory argues that Penny is a spy, citing a number of facts about her life that don't quite add up. Firstly, Penny merely maintaining a cover of "struggling actress," which is why she never makes a concerted effort to further her acting career. Secondly, she isn't really struggling financially, evidenced by the fact that she can afford to live alone in a nice Pasadena apartment while only working as a restaurant server for income.

The theorist also argues that Penny is technologically adept - as evidenced when she steals Leonard and Sheldon's WiFi - and uses gaming dependency as cover to spy on Sheldon remotely. She also doesn't seem to have a social life outside of her neighbors. The theory argues she only engaged in her previous romantic entanglements to lure Leonard, and this lack of real connections is further proof of her secret identity. 

The Redditor believes she is spying on her neighbors because the infamous elevator incident alerted authorities to two potentially dangerous scientists living in Pasadena. These scientists let missile secrets slip to a North Korean spy, so Penny - an American agent - was sent to monitor the situation.

Does this theory disturb you?