I'm shaking

I'm shaking (in fear)

A sarcastic phrase used to emphasize that one is not actually scared of someone or something. That scrawny twerp wants to fight me? Ooh, I'm shaking!
See also: shake
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

I’m shaking

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