A head cold named after singer Bill Kaulitz of Tokio Hotel. He and his band held a concert in Portland, Oregon when he had a cold. For two months after, an "unidentified strain" of the common cold spread around the city.
Girl 1: "coughcough"
Girl 2: what's wrong with you?
Girl 1: Bill Kaulitz sang to me at the concert and I caught the Kaulitz cough.