I really like 'Sailor Mouth', though it's never been one of my absolute favorite episodes. I guess part of the reason is that the whole plot of innocent characters learning about bad words is something I feel I've seen before in other shows, though to it's credit SB is one of the few (if not the only) cartoons that had the guts to go through with something like that. The whole sequence with Spongebob and Patrick playing 'Eels and Escalators' is funny at first, but goes on a little too long. The other thing is that the entire episode is based around one punchline - Spongebob, Patrick, Mr. Krabs etc. all saying curse words with the dolphin noise censor. That being said, it IS a good punchline. There's also some underlying humor here that you might miss the first time or not understand as a kid (like me), but catch on to it later. For instance, are they really saying bad words, or are the noises themselves considered offensive to sea creatures, given how dolphins are predators of fish? When Spongebob goes on a cursing tirade over the intercom, other customer's react in realistically humorous ways. "I don't understand, that guy's talented, he doesn't have to work blue." one of them remarks. "Let's go somewhere more family oriented." another says. The episode is funny and memorable, with some smart humor, and the ending with Mr. Krabs' mother getting involved is classic.
8/10