Okay, maybe I'm looking waaaaay too deep into this, but it kinda makes sense, follow me.........
RU486:
RU - Are you
4- for
86 - I hear this term used a lot here where I work (a trucking company), and they say "Have you 86'd him?" Which means that they fired him, kicked his ass to the curb....GOT RID of him...."terminate"
Get my drift?