Kirrp
Another word for "Cowbell Fever" which was made popular by Christopher Walken on a Saturday Night Live sketch. The sketch, which originally aired on April 8, 2000, features Walken as a music producer for the Blue Öyster Cult. Walken says he has a fever and that the only cure is more cowbell.
I went to the Blue Öyster Cult concert last night and now I have the kirrp worse than ever!