Speaking of neffing, actually you are kinda getting gypped at work. Gyp as in gypsies. In this sense, a reference to maybe gypsies tending to rip folks off.
My wife never listens to me. Every few weeks she uses the word and I point out that it's actually possibly a racist term. Every time it's like getting to tell the story all over again for the first time. Of course, no one knows where the word comes from and you could hardly accuse someone of being a racist for use of the term. No one in the U.S. anyway. Maybe different in Spain.
I am the master of the seemingly obscure.