Help me find crazy fictional superstitions :)

[Kittenwolf]

So! I need a bunch of superstitions and/or things involving the number 13 from fictional works (don't care if it's games, books, tv, movies, etc).

Anyone able to help me out? Random superstitions and such from media you happen to have seen recently?

[2D8HP]

Hardly recent, but "don't put a hat on a bed", from:

Drugstore Cowboy (https://en.m.wikipedia.org/wiki/Drugstore_Cowboy)

is all I can think of.

[Armaius]

I doubt this is a fully comphrensive list, but I would start by looking at the TV Tropes page.

http://tvtropes.org/pmwiki/pmwiki.php/Main/ThirteenIsUnlucky