Continuity mistake: In the scene after the introduction, when Joey and Gina are at the airport, Joey's bag strap at one point is under his collar, then when the shot changes his collar is under his strap. This mistake keeps happening during this whole airport scene. (00:02:00)
Michael: You're a hot girl. Hot girls get stuff for free.
Joey: Yeah, it's true. It's in the Constitution.
Alex: Look, I know what I am. I'm not a hot girl. I'm cute.
Michael: You're a hot girl that doesn't know she's hot. Joey was telling me about those.
Alex: No, I know hot girls. My sister is one of them.
Michael: "The even hotter sister" – one of four ways a girl doesn't realise she’s hot. Along with "went to a girls' school", "used to be fat", and "is blind."
Joey: You have learned well, young Michael.