A mistake or accident or an embarrassing moment.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.

1. an error

2. an embarrassing error that has to be removed from the show or movie.

Those squids in the Mario games.
They are a bitch to escape when you are swimming, totally vulnerable to them unless you have a fire flower or a cape.

1. A mistake
2. An embarassing scene or action.
Usually applies to TV

A blowjob while on the toilet.

A Mario Kart Wii item made of Fail and AIDS, which squirts ink on the screens of all drivers ahead of you, supposedly making it harder to see. It's nearly useless against decent human opponents.