shoot in the foot

shoot yourself in the foot

to do or say something that causes problems for you My brother has shot himself in the foot twice by turning down buyers for his house.

to do or say something stupid which causes problems for you He shot himself in the foot by suggesting that women politicians were incompetent.

To do or say something that inadvertently undermines one's interests.

Name	Pronounced	Usage
Gwrtheyrn	-	Ancient Celtic
Noemin	-	Biblical Greek
Dilshad	-	Persian
Devi	-	Hinduism, Indian, Hindi, Tamil
Bourgeois	['buəʒwa:]
Pankratiy	-	Russian