quasi-dope refers to a situation or individual that appears not to be 'dope', but is infact quite dope. It means they are implicitly dope, and unaware of perhaps how dope they come across as being.
So in hindsight, you may look back at a situation and realize that actually, that was dope.
Johnny McGuire entered into the piss, with a new shirt on
Jack looked over at the Scou and remarked 'that's quasi-dope, don't you think'