It also explains the episode with that Sudowoodo having a conversation with Wobbuffet in one of the older episodes.
Sudowoodo's Japanese name is Usokkie, which means "liar," or something like that. And it was a whole confusing scene with Team Rocket. James would ask Sonansu a question about Usokkie, and Sonansu would answer "sonansu!" and then Jessie would reply "Ah, so that's how it is, huh?", and then Usokkie would reply with "uso!", and then James would be like, "Wait, so it's a lie?" and then Sonansu would answer "sonansu!", and it would just go on and on. I'll admit I couldn't stop laughing, even if it was some lame joke that went on for more than a minute.