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Originally Posted by blacknomi Hello, dear teachers,
leave a bad taste in your mouth. Don't get it. 
sabrina |
This idiom focuses on the lingering effect of unpleasantness. Some foods taste bad, but the bad taste go away quickly. Other foods leave a bad taste for a period of time. When this idiom is applied to things other than food, it is about the lingering bad taste.
We had been dating for two months and I liked him very much. Monday night we went out and he became drunk and abusive. He has called me ten times since but I haven't returned his phone calls. His behavior on Monday left a bad taste in my mouth.