Reminds me of Monkey Business with the Marx Brothers. They stowed away on an ocean liner and when it came time to deplank, they stole a passport to get through customs.
Each member presented the document as PROOF that he was Maurice Chevalier.
INSPECTOR: Keep in line, everybody. Have your passports ready.
INSPECTOR: .
[All talking indistinctly]
INSPECTOR: Never mind. Hey, if you want to get off the boat...- get in the back.
- Oh, I didn't get on in the back.
- I got on in the front.
- Never mind that.INSPECTOR: Leave them alone.
ZEPPO: You're right... I told them to stay in line.
INSPECTOR: Yeah? Show me your passport.
ZEPPO: Yeah, right here. That's my name.
INSPECTOR: Maurice Chevalier?
ZEPPO: Yeah.
INSPECTOR: This picture doesn't look like you.
ZEPPO: Sure, I'm Maurice Chevalier. I'll sing for you.
[Singing] If a nightingale could sing like you
They'd sing much better than they do
INSPECTOR: Here, never mind that. Get back in line where you belong.
CHICO: I was ahead of you!
INSPECTOR: Your passport. Let me have your passport. This picture doesn't look like you.
CHICO: It don't look like me from the front, but go in the back of the boat, just like me.
INSPECTOR: You're not Maurice Chevalier.
CHICO: Are you Maurice Chevalier?
INSPECTOR: No.
CHICO: Well, there you are. Wait. I prove it.
CHICO: [Singing] If a nightingale could sing like you
He sing much better than you do and
INSPECTOR: Out!CHICO: No push me!
INSPECTOR: Get out of here! Get back in line where you belong. Passport! This picture doesn't look like you.
GROUCHO: It doesn't look like you either.
INSPECTOR: This man has no moustache.
GROUCHO: The barbershop wasn't open.
INSPECTOR: Why, look at that face.
GROUCHO: Well, look at that face.
INSPECTOR: Hey, are you going to identify yourself, or else...
GROUCHO: [Singing] If a nightingale could sing like you
They'd sing much sweeter than they do
For you brought a new kind of love to me
INSPECTOR: Out! Back in line where you belong!OFFICER : Get off there! Get off the table! What do you think this is here? Put that down! Lunatic! Stop that! You want to break that? Here, let it alone!
INSPECTOR: Passport. I said passport, not pasteboard. Come on with that passport! Not washboard! Passport! Chevalier?
[Lip-synching]
If a nightingale could sing like you
They'd sing much sweeter than they do
For you brought a new kind of love to me
[Record garbling]
And if the sandman brought me dreams of you
I'd want to dream my whole life through
For you brought a new kind of love to meINSPECTOR: Get him out of here! Put him back there where he belongs!
Bit of trivia: you hear Harpo sing at the beginning of the movie, when they are singing “Sweet Adeline” in four-part harmony in the barrels.