humorous slang Biology class. A reference to the traditional biology class activity of dissecting frogs. No frog slicing for me this term—I signed up for a chem class instead.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. biology class; a biology course. (A dysphemism.) Dave dreaded going to frog slicing. The smell got to him.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.