someone who is only your friend at night because during the day he/she is with his/her (most likely asian) significant other with a ball and chain attached to their crotch.
tycho: "hey where's that douche aaron?"
erik: "i don't know, he's such a vampire friend. we only see him at night!"
erik: "i don't know, he's such a vampire friend. we only see him at night!"
by ERIKTYCHO May 10, 2010