I have this postcard which says that I have a reservation in this hotel.
7 seconds sound clip from the Fear and Loathing in Las Vegas movie soundboard.
You can hear this line at 01:10:28 in the Blu-ray version of the movie.
Quote context
[...]
- But now I couldn't do without my supply...
- I'm a police chief from Michigan.
- Look, fella, I have explained to you.
- I have this postcard which says that I have a reservation in this hotel.
- We've already paid for our goddamn room!
- You listen to me, you filthy little faggot!
- I want a manager down here now! Now! Because I'm sick of listening to your dog shit!
[...]