Hahaha...A wet fart is something that happens to *YOU* without warning and it is often noisy, smelly and very embarrassing. Wet fart is a natural bodily function so it's hard to compare it to a movie.
A movie is a film with a beginning, middle and end that uses characters, scenes, sets and props to tell a story in order to entertain, inform or change the lives of the people who watch it.
A wet fart is just what happens when *YOU* are unfortunate enough to release some intestinal gas. No artistic merit, though it can be amusing for some degenerate such as yourself!
I am aware that this statement seems to be somewhat strange but I can tell the difference between a movie and a wet fart.