your/somebody's number two
1. One's second-in-command; the person with the second-highest level of power or authority in some group, company, or organization. He left his number two in charge while he traveled abroad to seek new investors. This promotion will actually make me the new number two in the company.
2. euphemism Defecation ("number one" being a euphemism for urination). Do you have to do a number one or a number two?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
your/somebody’s number ˈtwo(informal) the second most important person in a company, an organization, etc: Brian Jones is the new number two at the ministry.
Farlex Partner Idioms Dictionary © Farlex 2017
n. defecation; an act of defecation. Mommy! I gotta do a number two.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.