I have to admit that there are several scenes that I just lose it and start laughing my head off at.
The scene with Ma talking to the police is hysterical.
Ma- "His APE! Eating my Oreos, Craaaaping all over the place. Twelve ribs my ass."
And when the Black Widows drive up on her lawn and she goes to town on them whipping out the shotgun blasting away hitting the gas tanks. Classic stuff.
I also love the scene where the Police are target practicing listening to the local boys on the radio and trying to figure out what their number codes are. That reminds me of Airplane alot.
Philos Tarzan yell is classic as well. That whole fishing scene is funny as hell. "Give me that rod! He's a stud, He's got to weigh 25 pounds." SLAP! Then the other cop. "Feet don't fail me now", Running though the brush with all of that equipment and mumbling "Snakes, Apes this is crap", or something like that.
The scene where Philo runs into the Black Widows in the ally And the leader shouting durning the fight "THE BIKES! THE BIKES!".
The final scene of the movie with all of Philos adversaries washed up driving down the highway.
Really to many funny scenes to mention them all.