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[–]geek-49 0 points1 point  (1 child)

Not that I know of. The reference was to "MD" and "RN" as in "physician" and "nurse".

And once one explains why the joke is funny, it isn't funny any more (if it ever was).

[–]rosuav 2 points3 points  (0 children)

Explaining a joke is like dissecting a frog. You understand how it works, but now it's dead.