What is the latin translation for "promote and forget the bastard"?

I would try to help, but it does not make sense to me even in English. Are you sure it was promote?

It’s an old joke in pseudo Latin. “Don’t let the Bastards get (or grind) you down.”

For various versions:

http://www.google.com/search?client=safari&rls=en&q=Don’t+let+the+bastards+get+you+down+Latin&ie=UTF-8&oe=UTF-8

Ahh, enlightenment. That is why you are keeper of the flame, oh wise one. Still, you got that from Promote and forget? I am awed.

It was the “bastard” part that jiggled my memory…“Illegitimus.” I first heard it on a three-day climbing trip across the Presidential Range in the White Mts. We stayed at two of the AMC huts, manned by “older men.” The dog Latin was written on a wall, I was 14 and the guys refused to translate; so of course, I never forgot.

(I learned my Yiddish that way – my grandmother spoke it when she didn’t want me to know what she was saying, nu?)

I figure that aging has some benefits – I think.