put your foot in it
put your foot in itBRITISH, AMERICAN or
put your foot in your mouthAMERICAN
COMMON If you put your foot in it, you say something which embarrasses or offends the person you are with, and embarrasses you as a result. I put my foot in it straight away, referring to folk music. Tom sat forward and glared. `It's not folk music, man. It's heritage music.' To the majority of voters, he is a lightweight, forever putting his foot in his mouth.