loghaD:

The closest direct equivalent of "nerve" in this sense is probably {butlh}
("gall; dirt under one's fingernails"). However, this is generally seen as quite a positive trait to have

Yes, I thought of using {butlh} too, but then the problem was indeed
that it's a positive trait to have.

Perhaps we could say something like {mutIch chaballIj} "your desire
insults me", although again this doesn't seem to capture adequately
the meaning of the "nerve" as described in the aforementioned car
example. Or perhaps we could say {mumer chaballIj, 'ej mutIch} "your
desire surprises and insults me". I don't know.. I can't seem to be
able to think of anything better.

Maybe just shake your fist and shout, taHqeq!

-- 
SuStel
http://trimboli.name