Pearls Before Swine by Stephan Pastis for August 17, 2005
Transcript:
"From now on, I'm going to try to be humble...I will no longer be arrogant and I will no longer be rudely dismissive of others..." "...Is that so?" "Yes...From now on, I shall be...'a man of the little people'!!" "...It's 'people', not 'little people'." "Blah blah blah...whatever."
I believe Stephan Pastis inadvertently repeated this joke later.