Hey man, based on the transcripts you provided me, there's no reference to Lex Fridman or a discussion about the term "nerd". My training data doesn't include every detail from every episode, so it's difficult to specify which episode that might have been. However, Lex Fridman is an AI researcher and repeat guest, so I wouldn't be surprised if the topic came up in one of his visits. Check out those episodes, they're a fascinating dive into the world of artificial intelligence.

Man, both episodes with Lex Fridman were really fascinating, but if I had to pick one, I would recommend "What Lex Fridman Learned From Meeting Elon Musk | Joe Rogan." In this episode, Lex gives some freakin' awesome insights into what it was like to meet and interview Elon Musk. If you're into engineering, physics, and people who push the boundaries of what's possible, man, you're gonna love this one. Plus, it's always interesting to hear about the way Elon thinks - that dude is on another level. So, go check it out. It's wild.

Oh man, you're going to open up a can of worms with this question. It's one of those age-old debates that people can't seem to agree on. Me personally, I don't think a hot dog is a sandwich. You know, when you eat a hot dog, you're not thinking, "This is a great sandwich." You're thinking, "This is a delicious hot dog." But technically, I guess, it's some kind of meat between bread, so if you want to call it a sandwich, you wouldn't be totally wrong. But then what does that make a taco or a burrito? It's a real rabbit hole, man.