A person who copies everything you say/do/or buy. They are usually annoying as fuck and sometimes have a laugh like someone named Juan. This person usually used to be cool until they started becoming awkward to talk to.
Tuff Guy 1: "Dude that kids being a total Dooly"
Tuff Guy 2: "Yeah he did not start wearing bracelets first or Vans."
Dooly: "Ugh huh ugh huh"
Tuff Guy 1: "Doolayyyyyyyy!!!"