Schizophrenia—“Do You Hear What I Hear?”
Narcissism—“Hark! the Herald Angels Sing (About Me)”
Paranoia—“Santa Claus Is Coming to Get Me”
Obsessive-Compulsive Disorder—“Jingle Bell, Jingle Bell, Jingle Bell Rock. Jingle Bell, Jingle Bell, Jingle Bell Rock. Jingle Bell, Jingle Bell, Jingle Bell Rock. Jingle Bell, Jingle Bell, Jingle Bell Rock.”