Idioms and Phrases with sick joke
An anecdote intended to be humorous but actually in very bad taste, as in His stories turn out to be sick jokes about people who are handicapped in some way. [Colloquial; mid-1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.