A discarded hypodermic needle commonly found in large metropolitan areas, abandoned by IV drug users and irresponsible diabetics after use.
Friend: "Hey i'm going skating today at Wells Fargo."
Me: "Careful around there, lots of urban scorpions. Don't fall and get stung."
Friend: "Dude I have Hep C anyway no worries fam"
One who has never heard of urbandictionary, and therefore MUST have been living under a rock.
Mario had never heard of urbandictionary? What an urban scorpion!