cut the comedy
Also, cut the crap. Stop talking or behaving foolishly, as in Cut the comedy! We have work to do, or It's time you cut the crap and got to work. The first of these slangy imperatives dates from the early 1900s, the ruder variant from the 1920s.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.