When someone is unwilling to accept the current or proposed state of affairs. Can also be used when someone doesn't believe you're telling them the truth.
Bush thought he'd slip Harriet Miers
by on a nod
and a wink
, but the Bushevik
s weren't having it.
I told my mom I wasn't the one who put a dent in the car, but she was NOT having it and pressed me to give her the whole story.