Because you're... You know. Let's face it. You're no spring chicken, and I mean that in the best possible way.
8 seconds sound clip from the The Emperor's New Groove movie soundboard.
You can hear this line at 00:16:16 in the Blu-ray version of the movie.
Quote context
[...]
- Hey, Kronk, can you top me off, pal? Be a friend? Ha, ha.
- Now, about you finding new work...
- This isn't poison. This is extract of llama. Ugh!
[...]