What Simpson Episode?

It is a montage espisode... It feels Cletis the Slagjaw Yokle... All is was a parade and Nelosn was laughin at this really tall guy in a small car... and the Tall guy said "Are y laughin at my misfortune".....Then the pulls Nelson pant down and make him walk in the parade and everyone laughs..... Have Seasona 1-5 and its not on any of them