Peanuts by Charles Schulz for November 16, 1955
Transcript:
Violet walks behind Pigpen down the sidewalk.<br> <br> She looks at him curiously as he slowly becomes dirty.<br> <br> She lets out an exlamation as he becomes increasingly dirty.<br> <br> Violet turns to an extremely dirty Pigpen and exclaims, "'Pig-Pen', you're the only person I know who can get dirty just walking along the street!"<br> <br>
I think this is the first strip to show him getting dirty without trying.