An interjection usually used to express a negative emotion, such as dismay or displeasure. Hoo boy, I've got 24 pages of legal jargon to get through—lucky me. Aunt Louise is here? Hoo boy, we'll never be able to get out now—that woman could talk the leg off a chair.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.