What does Boxing Day have to do with boxing?
1892, in Chaddock's translation of Krafft-Ebbing's "Psychopathia Sexualis," from necro- + -philia.
necrophilia nec·ro·phil·i·a (něk'rə-fĭl'ē-ə)n.
An abnormal fondness for being in the presence of dead bodies. Also called necromania.
Sexual contact with or erotic desire for dead bodies.