can't find one's butt with both hands
can't find (one's) butt with both hands
rude slang Cannot do the simplest task. Please don't put Randy on the construction team—that guy can't find his butt with both hands!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
can’t find one’s butt with both handsverb
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.