This one is a funny case.
This is my least favorite of the original five episodes, however I did give the other 4 all 9/10's. This one has a very annoying Spongebob and a slow first half and that's really the only flaws, On the other hand it doesn't do anything supremely well but does the small things right, Mermaid Man And Barnacle Boy are great characters as always, Dirty Bubble is a great character and Charles Nelson Reilly gave a wonderful performance, And mostly it has a nice plot. I like how Spongebob gets to actually spend the day with Mermaid Man and Barnacle Boy and it also is a nice finish to season 1. Some of the jokes like Barnacle Boy getting burned, them falling off the roof, Springboob Squirepint, the breakfast biters and also the weird functions of the boat mobile are little chuckles, the opening is what holds this one back, the montage is just kinda boring and also the episode is just mediocre until Barnacle Boy takes the conch shell which is where the episode picks up steam and stays on a nice simple steady track until the end.
Overall while no where near close to one of my favorites it is one I do often go back to and I have to admit I may like it more in the future after some more watches but for now this is a perfectly fine episode of Spongebob and a nice end to my favorite season of the show
2Ob Mermaid Man And Barnacle Boy II: Good 7/10