Not enough farts. Definitely needed more farts.
Just kidding, there were plenty of farts in The Haunted Trailer - farts in practically every scene. I love farts. My best friend also loves farts. (When we get together with some Burger King Onion Rings...watch out!) My eight year old son loves farts, probably because he is eight years old, but also because he is my son. Really, who DOESN'T love farts? If you say you don't love farts, you're LYING. Farts make the world go around.