A recently common insult, usually meaning 'loser', or 'retard'. Usually common amongst teenagers, especially around northeast Britain. This latest phenemenon in insults is different than the usual, as it is replaces the recipient's name. The origin of this is unknown, but is known to pass from school to school.
"Haha, wow, JC, you're such an idiot"
"Wow, you hit like a JC!"