Image used under Creative Commons license from Flickr user r.f.m II.
“Hey Willie, that old couple looks just like you.” – Homer Simpson
“Aye, ’tis my Ma and Pa. They own a tavern hereabouts, they still have the same pool table on which I was conceived, born and educated.” – Groundskeeper Willie
I felt it was a mistake bringing Willie’s parents into the show, if only because it sort of contradicted the revelation many episodes before that Willie’s father was hanged for stealing a pig.