NPR Sunday Puzzle (Jul 17, 2011): Vacation Hospitalization:
Q: Think of an adjective that might describe a child before a summer vacation. Change the second letter to the next letter of the alphabet, and you'll name someone you might see in a hospital. Who is it?
I'm sorry to dash your hopes, there are no clues in this post today.
Edit: In printing, there's an em dash (—) and an en dash (–), related in size to the printed letter 'm' and 'n', respectively. That was a hint to the letters that are changed. Also, the sentence included "I'm" and "in", the prefixes to the answers.
A: IMPATIENT and INPATIENT