You're to be scrubbed clean before supper, and that means washed under your fingernails and back of your ears and dressed in your Sunday best.
11 seconds sound clip from the Joe Dirt (2001) movie soundboard.
You can hear this line at 00:07:00 in the Blu-ray version of the movie.
Quote context
[...]
- I learned cows don't find bottle rockets as funny as I do.
- Then there was this one old lady, she had me for a couple of weeks.
- I don't wanna be unkind, but this woman was a little off-balance.
- I expect your schoolwork to be done every night and laid out for my inspection. Is that clear?
- Uh, can I push him off my leg?
- He'll stop humping as soon as he's done.
[...]