That ain’t hay!

(and) that ain't hay

And that's significant. Often used in reference to an amount of money. He got a $5,000 bonus this year, and that ain't hay.
See also: hay, that
Farlex Dictionary of Idioms.

That ain’t hay!

exclam. That’s money, not something worthless. That car cost $40,000, and that ain’t hay!
See also: that
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • and that ain't hay
  • (and) that ain't hay
  • that ain't hay
  • hay
  • roll in the hay
  • a roll in the hay
  • hay head
  • hit the hay
  • hit the hay/sack, to
  • hit the sack/hay