When the guys think the "ugly naked guy" across the street is dead, they invent a giant poking device to test.
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Friends Season 3 Episode 8 Quotes

Joey: If the homo sapiens were in fact homo sapiens...is that why they're extinct?
Ross: Joey, homo sapiens are people!
Joey: Hey, I'm not judging!

Monica: He's not going to say anything because we're not going to tell him.
Rachel: We're not?
Monica: No, we're not.
Rachel: Alright, I like that.