Says who?

Says who?

 and Sez who?
Inf. a formulaic challenge indicating disagreement with someone who has said something. Tom: Says who? Fred: Says me, that's who! She drew herself up to her full height, looked him straight in the eye, and said, "Says who?"
See also: Say

Says who?

and Sez who?
interrog. a formulaic challenge indicating disagreement with someone who has said something. (see also Says you!.) TOM: Says who? FRED: Says me, that’s who! She drew herself up to her full height, looked him straight in the eye, and said, “Says who?”
See also: Say