You could say Dennis.
3 seconds sound clip from the Monty Python and the Holy Grail movie soundboard.
You can hear this line at 00:09:23 in the Blu-ray version of the movie.
Quote context
[...]
- What knight lives in that castle over there?
- I'm 37.
- I didn't know you were called Dennis.
- You didn't bother to find out, didn't you?
- I did say sorry about the old woman, but from behind you look...
- What I object to is that you automatically treat me like an inferior.
[...]