I'm not old

From Monty Python and the Holy Grail...
[thud]
[King Arthur music]
[thud thud thud]
[King Arthur music stops]
ARTHUR:
Old woman!
DENNIS:
Man!
ARTHUR:
Man. Sorry. What knight lives in that castle over there?
DENNIS:
I'm thirty-seven.
ARTHUR:
I-- what?
DENNIS:
I'm thirty-seven. I'm not old.

I couldn't agree more...