He has extremely chapped lips, causing him to spray spit whenever saying the letter P.
Now, many, many students want to skip Pluck's class, but they always show up early. Why?
Because the first row is The Spit Zone. If you are early, you get the back. If you are late, or sometimes even on time, you still get the spit zone.
This is especially bad, for Pluck uses the letter P more than any other letter.
His dream is to have proper pronunciation of the letter P.
In reality, Let us Spray! Let us Spray!