Says me!

says me

On my authority; according to me! Used to assert one's confidence about some statement or proclamation one just made, typically in response to the phrase "Says who?" A: "You are not taking the car out tonight!" B: "Oh yeah? Says who?" A: "Says me! I paid for it, so I get to decide who uses it or not!"
See also: say
Farlex Dictionary of Idioms.

Says me!

 and Sez me!
Inf. a formulaic answer to Says who? Tom: Says who? Fred: Says me, that's who! Tom: You? Fred: You got it, buster. Says me!
See also: Say
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

Says me!

and Sez me!
exclam. a formulaic answer to Says who? TOM: Says who? FRED: Says me, that’s who! TOM: You? FRED: You got it, buster. Says me!
See also: Say
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • says me
  • sez me
  • Sez me!
  • (one's) best foot forward
  • if you're not Dutch, you're not much
  • if you ain't Dutch, you ain't much
  • (I'm) just saying
  • and how
  • and how!
  • 57