4/20 mode

When you play the custom night in a FNaF game with every animatronic in the highest activity level. The number varies depending on the game since the number of animatronics always different (ex. 10/20 for FNaF 2, 5/20 for FNaF 4 and 50/20 for Ultimate Custom Night).

No, this doesn't have anything to do with illicit substances. Go consume yours somewhere else.

Lucas: 4/20 mode is so hard in this game! Even the animatronics that are already annoying get worse!
Jeff: what were you expecting stupid