The most clear LOL moment I had during the movie was the scene you described with the stun gun. I didn't find the LOL of the moment from the slap stick falling down type of humor but how the scene played out in between the slap stick type stuff. When the chubby kid volunteered to taze Zach Galifianaki is when I started laughing out loud. When the kid walked up to the front of the class and the scene slowed down and the camera went close on Zach's face and the kid's face is when I started to get the tears from laughing so hard. Just thought it was interesting that I found the most humor in a scene that you described was played out humor, but I think I just found it funny in a slightly different way or something....? Hope that makes sense...