I´m afraid no, Germans don´t make any funny or jokes of Bauertrampel like Redneck... Germans jokes "Ossi" (East German) and "Wessi" (West German) it explains in link GDR jokes - Wikipedia, the free encyclopedia There´re less and less since the wall of Berlin pulled down in 1990.
Farmer wear bavarian clothes at old tradition... They swear bad language and no manner... that´s why we call them "bauertrampel"...
http://www.stubaital.com/neustift/images/allgemein/stammtisch.jpg
http://www.insauna.com/190bier ist lecker.jpg
Example look like this...
http://www.bbsb.org/bilder/wiesnrallye2006/im_schottenhamel.jpg
I will add more if I find bauertrampel pictures...
