Pulp Fiction is a cult classic with movie-lovers everywhere, but there are still some sneaky things hiding in the film that even the most die-hard fans may not know about.

The Huffington Post has put together a list of the 5 theories that have kept some movie sleuths scratching their heads till this day.

1. The briefcase contains Marsellus Wallace’s soul.

2. The “pulp” in “Pulp Fiction” is “toilet paper.” If every character went to the bathroom faster, the whole movie would be different.

3. Jules Winnfield’s Ezekiel 25:17 monologue is a “misquote,” but could actually be the real passage from how The Bible was written in Tarantino’s universe.

4. The classic movie mistake of the bullet holes already being in the apartment wall before Vincent and Jules are shot at was actually intentional.

5. The canceled pilot Mia starred in was “Kill Bill.”

How have these theories been thought up? Well, check out the full story on the Huffington Post to find out exactly how and why these notions exist.