I can understand what you mean. I'm scared of weird crap too. Like the full-body parts from Elmo In Grouchland. Anyways...
I enjoy this episode. It's one of those Season 4 episodes that seems as though it could easily fit in with the first 3 seasons. From what I've heard, this and some other episodes were supposed to be in Season 3, got cancelled, and got remade for Season 4. There were a bunch of great gags and such. The gross-out stuff was actually funny here, unlike in later episodes. I agree that the animation was a bit odd, but I think it was also odd in the SB movie, and here, SpongeBob's voice didn't sound like crap. Overall, this episode is great to start off season 4, but a bit forgettable and weird. Overall: