A woman sends her clothing out to the Chinese laundry.

When
it comes back there are still stains in her panties.

The
next week she encloses a note to the Chinaman that says,
"Use more soap on panties."

This goes on for several weeks, the woman sending the same
note to the laundry.

Finally fed up the Chinaman responded with his own note that said,
"Use more paper on ass."