Don't have a cow!

don't have a cow

slang Don't get upset. Don't have a cow—I'm sure we'll find a solution to this problem. I only borrowed one of your shirts, so don't have a cow!

See also: cow, have

Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

Don't have a cow!

Calm down!; Don't get so excited! (Made famous in the television show, The Simpsons.) Chill out, man! Don't have a cow! Aw, don't have a cow, Dad!

See also: have

McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.