It's Punky Brewster

Punky's Half Acre (2x11)

Air date: Nov 01, 1986

At that farm of Punky's pen pal Judy, Margaux's prissiness causes problems. Hearing the others talk about her, she tries to do a make-good by cleaning the farm's prize pig Lancelot. In the process, Lancelot escapes from his pen just before his entry into the state fair.