Flictonic Cliple Weber Sydrome. In the anime
also named FLCL, Haruko diagnoses Naota with it when she impersonates a nurse when Naota goes to the hospital.
Haruko: Hmm... It's Flictonic Cliple Weber Syndrome
Naotoa: What? FLCL?
Haruko: It's a stress induced condition. If a child pushes himself too hard, he'll grow a horn
Naota: That's a lie, i've never heard of it!
Haruko: It's a lie... so... exactly what is that? Under your bandaid?
*Haruko goes crazy and tries to kill naota with her bass guitar*