Parental Guide for Profanity is way off.
50 uses of sh!t? Get real.
http://www.springfieldspringfield.co.uk/movie_script.php?movie=super-8
Transcript from the film here. Ctrl+F to find swear words:
S-word: 17 uses
A-hole: 2 uses
Dumb ass: 1 use
Bitch: 2 uses
Damn: 3 uses
Dick: 1 use
Pussy: 2 uses
F-word: 1 use
Douche: 1 use
I would change it, but it's locked...
On a side note, holy Christ! This movie got away with a lot of profanity for a PG-13. The only other PG-13 on this level that I'm aware of is Ferris Bueller's Day Off. That has 20 uses of sh!t. Or, Barbershop which has 8 s-words, but FOURTY-NINE uses of ass and 23 uses of damn. The sequel had 24 uses of ass and TWENTY ONE uses of sh!t too.