A pubic area that has full grown and ungroomed pubic hair, resembling that of pubic area of an unshowered/ungroomed person during the midieval times (due to a lack of knowledge in the pubic groomingtrade).
"Ew, you can tell that girl doesn't shower and has the dirtiest midieval bush!"
"No, I would not go down on Cate Blanchette in Robin Hood, celebrity or not, during that era she definately had a midieval bush."
"I've been backpacking for 2 weeks now, I'm starting to get a midieval bush."
referring to President Obama's fiscal deficit spending and economic stimulus polices being in much greater proportions than former President George W. Bush's in which federal spending and the public debt of the United States grew substancially during his tenure.
Man, and I thought a $500 billion dollar budget deficit was nuts during the Bush administration. Under Obama it's 1.5 TRILLION !!! He's out-Bushing Bush.