Question

INFORMAL: an expression used to tell someone to be grateful for something that has been given to them, instead of asking questions about it or finding something wrong with it (use "horse")

Accepted Answer

Never / don't look a gift-horse in the mouth.

Front	INFORMAL: an expression used to tell someone to be grateful for something that has been given to them, instead of asking questions about it or finding something wrong with it (use "horse")
Back	Never / don't look a gift-horse in the mouth.

Informal Expression Grateful Questions Finding Wrong Horse Gift Horse