Nailing a Dead Baby

Alright listen up buttercup. So, the joke is saying that nailing a dead baby to a tree is hard. But the dude says his dick is harder while he's doin' it. The joke is funny 'cause it's effed up and unexpected. I know you're not the sharpest tool in the shed, but I hope you get it now. Also I know you are probably too scared to talk to women. I'm a bear. I get more action than you.