Here's how I rate comedies:
10: Laughed so hard I couldn't breathe, tears rolling down my cheeks, stomping and pounding the armrest of the chair.
7: Laughed out loud
5: Found it amusing, got a few chuckles, brought smiles to my face throughout
3: A few smiles.
On this scale, the American Pie movies got about a 5, There's Something About Mary gets about an 8, and the last 2 Austin Powers movies get a 10 (primarily for the silhouette scenes). Talladega Nights gets a 5.
Funniest line: When Grandma Bobby is throwing out the grandsons' violent toys, and the little guy says "Aw, grandma, not my prison shank!"