From Longman Dictionary of Contemporary Englisha kick in the teetha kick in the teethinformalDISAPPOINTED something that is very disappointing or upsetting that happens when you need support This broken promise is a real kick in the teeth for our fans. → kick
Examples from the Corpus
a kick in the teeth• That is why the settlement of 4.4 percent. is rightly described as a kick in the teeth. 