I don’t believe this!

I don't believe this

An expression of surprise or incredulity, possibly bordering on vexation. I don't believe this—I have the winning lottery ticket! So you came crawling back to us after all. I don't believe this.

See also: believe, this

Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

I don’t believe this!

exclam. What is happening right now is unbelievable! I don’t believe this! It can’t be happening.

See also: believe

McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.