Why you messing with me? Did Crumpet put you up to this?
5 seconds sound clip from the Elf (2003) movie soundboard.
You can hear this line at 00:28:38 in the Blu-ray version of the movie.
Quote context
[...]
- Ten a.m. tomorrow. Santa's coming to town. Yes.
- You are very good at decorating that tree.
- Why you messing with me? Did Crumpet put you up to this?
- I'm just trying to get through the holidays.
- Get through? Christmas is the greatest day in the whole wide world.
- Uh-oh. Sounds like someone needs to sing a Christmas carol.
[...]