Schrodinger's slur

Schrodinger's slur is simultaneously an offensive term for someone of a certain ethnicity, and at the same time a fun nickname when used by friends.

Karen: You damned dirty SPICS.
Juan: How dare you!!

Julio: What's up you dirty spic?!
Juan: Not much bro what's up?
Michael: What just happened?
Juan: Schrodinger's slur.