cracker spout 

slang term for the mouth when telling someone to shut up. synonymous with pie hole, cum dumpster, etc.

seal the cracker spout, or it's curtains!

cracker spout by ravenflesh June 23, 2008

shouty-crackers

yelling in a very angry way (used in Great Britain.)

Sorry love, didn't mean to get all shouty-crackers.

shouty-crackers by Dr. Heywood R. Floyd April 13, 2007