Dumb and Dumber (1994)

Continuity mistake: When Lloyd tackles Mary on the hotel stairs, she is wearing black pantyhose. By the time they get to the hotel room, she has miraculously changed into grey tights. (01:28:45)

Lloyd: What do you mean you don't bet? Wussy! Wussy!
Harry: I never have and I never will.
Lloyd: Yeah, right. I bet you twenty bucks I can get you gambling before the end of the day.
Harry: No way.
Lloyd: I give you three to one odds.
Harry: No.
Lloyd: Five to one?
Harry: No.
Lloyd Ten to one?
Harry: You're on.
[Lloyd and Harry both shake hands and smile.]
Lloyd: I'm gonna get you.
Harry: Nuh-uh.
Lloyd: I don't know how, but I'm gonna get you.
Harry: Nuh-uh.

Trivia: In the bar scene Lloyd sees the newspaper clipping on the wall and says "No way! We landed on the moon?" This wasn't in the script - Jim Carrey improvised the line and it was left in the movie.

Question: What is the name of the song that is playing during the opening credits?