head-scratching

head-scratching

Very confusing or perplexing. Usually used before a noun. I don't know what to make of his head-scratching reaction. I didn't expect him to get so angry about such a minor request. Can you make sense of these head-scratching directions? Where do you think these extra screws are supposed to go?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.