Wonkette writes, By now you have all seen this gif of this tumblr, of Michelle Obama rolling her eyes at John Boehner like she is a 14-year-old girl. It has been online like at least 15 minutes! But we have a pressing question: What doubtless off-color and probably disgusting joke did Ol’ Ginblossom tell to make our always poised and gracious First Lady react like that? This thing! “And there was this one sign that said, ‘the National Zoo has an African Lion’….” “Did you hear the one about the woman who is attacked on the street by a gorilla, beaten senseless, raped repeatedly and left to die?…