Continuity Errors In 'The Big Bang Theory' That Fans Noticed

Redditor.u/huscarlaxe:

Leonard and Penny break up. Sheldon claims he is allergic to cats. Later, when he and Amy break up, he adopts several.

Redditor.u/Mattynicklin:

Sheldon does not knock three times on Penny's door in one early episode.

Redditor.u/huscarlaxe:

Sheldon claimed Leonard does not snore in earlier seasons. Later, Leonard gets surgery to stop his snoring.

Redditor.u/FeelThePower999:

Penny's father's name changed from Wyatt to Bob in one episode.

Redditor.u/jphamlore:

Sheldon kept the secret of Leonard's rocket fuel experiment blowing up the elevator from the landlord, police, Homeland Security, etc. This seems questionable since Sheldon often makes up wild excuses when lying.

Redditor.u/Victor_Cheng:

Leonard seemed more satisfied in bed in Season 3. After breaking up with Penny and getting back together, he was not that good. The author wonders what happened to him.

Redditor.u/FeelThePower999:

Sheldon was called a "Taurus" (April 19-May 20) in an early episode. Now, his birthday is in February.

Redditor.u/AllisonMac:

In the episode where Leonard stops driving around Sheldon, Sheldon lists places he needs to go. Supercuts is one spot. Just before, he said he hated Supercuts. He stated something like, "I went there once and it was not super."

Redditor.u/jphamlore:

When Bernadette and Howard reunite in Season 4, she says Howard never made the move. However, in Season 3, "The Gorilla Experiment," Howard was already in bed with Bernadette trying to remove her bra. Their moment ended when Howard's mother arrived, and later by their fight over Howard's jealousy concerning Leonard showing his lab to Bernadette.

Redditor.u/jessielynjl12:

Bernadette knows how to get Sheldon to bed. She explains her mom ran an illegal daycare in their basement. Bernadette later says she hates kids because her mom worked and had to watch all her younger siblings.

Redditor.u/Allisonmac:

Sheldon's mom says he was born at "the Wal-Mart." Sheldon claims he was born at the hospital where Stephanie did her internship.

Redditor.u/AllisonMac:

Sheldon does not want Leonard to move out for Penny. He eventually suggests they start with Leonard staying at Penny's house one day a week. Leonard has stayed at Penny's house many nights already.