Laddies, listen up because the desperate dick is someone you do don't want to fuck with. A desperate dick is someone who is just so obviously desperate that it's almost embarrassing. Generally, the desperate dick would possess a dick but it also could mean that they are just an ass.
Guy 1: Hey mami, wanna get dinner sometime and then fuck in the back seat of my car?
Girl 1: Ewwww, no. You're just a desperate dick!