I say I've been offered another job?
You need a raise? Too bad. Who cares! We don't. No one is
ever going to give you a raise because you "need" one. Cut back from
300 cable channels to 50, or buy the mac and cheese in a box instead of the
gourmet frozen. As for saying you have another job offer -- you can get away
with it exactly once at each company you work for, so make sure you use that
bullet at the right time. HR departments usually don't check up on such things,
but don't be surprised if your boss simply calls your bluff, saying, "Best
of luck in the new job." Then you're really going to be needing that mac
and cheese, aren't you?