Glee

Show generally

Other mistake: When the kids are opening their lockers, they enter the code, then pull on the lock to open the locker. The closed lock is still attached to the front of the locker. When they close it, it's magically locked again without them ever opening or closing the lock. In reality, these locks would be useless, or the locker doors wouldn't open.

Show generally

Other mistake: Many of the Warblers appear in McKinley throughout the show, even after the Warblers were introduced. An example of this is that Trent is often seen walking throughout the halls of McKinley. He even sits in front of Finn in "Substitute" when Holly Holiday is teaching the students Spanish.

Duets - S2-E4

Revealing mistake: Season 2, episode 4 (Duets): When Brittany lifts Artie from his chair and carries him to her bed, right before she puts him down, he is obviously lifting his feet to prevent them from bumping into the bedframe.

nightline

More mistakes in Glee

Showmance - S1-E2

Will: Hold on a second, Sue.
Sue: I resent being told to hold on to anything, William. I will not be treated like a second-class citizen because of my gender.

More quotes from Glee

Mattress - S1-E12

Trivia: Brittany's name in the yearbook photo appears simply as Brittany: she didn't get her surname until Season 2.

Douglasac

More trivia for Glee

Answer: Coach Sylvester is generally bullying to most staff and students but she particularly dislikes the glee club because they compete with her cheerleading squad for limited school funds.

raywest

More questions & answers from Glee