Please refrain from using any further obscenities in front of these people.
6 seconds sound clip from the Coming to America (1988) movie soundboard.
You can hear this line at 01:01:49 in the Blu-ray version of the movie.
Quote context
[...]
- Come on! Stop stallin'. Come on. Don't stall me. All of it!
- It would be wise for you to put the weapon down.
- Who the fuck is this asshole?
- Please refrain from using any further obscenities in front of these people.
- What?
- I've warned you. I'll be forced to thrash you.
[...]