okd stands for obsessive kaulitz disorder refering to the kaulitz brothers bill (vocals)and tom (guitar)from the band tokio hotel. means a person who talks non stop about them, only listenes to them and knows more abouts them then the kaulitz brothers themselves know.
person 1: michelle hasent hung out with us in a while

person 2: i know she is so being obsessed with bill and tom kaulitz

person 1: yea, I think she hase a case of okd
by alex248m October 26, 2008
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