From Barney Bunch wiki
Ernie the Testicle Smashing Midget and is smarter than him but they still get along. Bert sometimes acts angry around Ernie but Ernie gets pleasure from it. Bert and Ernie have been making pornos since 1969 and still do to this date. He is also a big fan of male pigeons and also rubs oatmeal on his genitals.