fret the gizzard
To vex oneself; to worry.
ADJ.
hard
VERB + GIZZARD
grinding, lack, punch
PREP.
in
noun
A specialized organ constructed of thick muscular walls found in the digestive tract of some animals, including archosaurs (including crocodilians and birds), earthworms, some gastropods, some fish, and some crustaceans, and used for grindi
As fortune has it, kingbirds, like owls, lack a grinding gizzard and regurgitate hard fragments from their meals.
The (human) stomach.
"Pushing a man's face into his own breakfast is beyond rules or reason, and deserves a punch in the gizzard."
noun — thick-walled muscular pouch below the crop in many birds and
To vex oneself; to worry.
As fortune has it, kingbirds, like owls, lack a grinding gizzard and regurgitate hard fragments from their meals.
Wiktionary"Pushing a man's face into his own breakfast is beyond rules or reason, and deserves a punch in the gizzard."
Wiktionaryi Register
In some senses, gizzard is marked as slang. Watch for register when choosing this word.