Whoa "Nelly" or "Nellie"
What you say to
a pushy bitch who is 
working on your last nerve.
-1940s-

Generally, this is the beginning of a public spat

from which neither of you will recover.

emotionally or socially, especially if you include the "pushy bitch" part.

Commonly regarded as an insult,

calling someone nelly to his face is high on the trash talk list,

publicly questioning his masculinity,

especially when he fancies himself a top.

But, as they say, and he might,

"Take's one to know one."

Touché!