A bag full of used clothing

Shortened Version:

A wife tells her husband she has a bag of used clothes to donate, but he suggests throwing them away. When she mentions starving people might need them, he quips, “Anyone who fits your clothes isn’t starving.”

Later, the wife finds a note from her husband explaining he’ll spend the evening with his 19-year-old secretary due to “needs” she can’t fulfill at 57. In response, she leaves a note saying she’s with her 19-year-old student, noting, “19 goes into 57 more than 57 goes into 19.” She adds she won’t be home until the next day.