banana skin
noun /bəˈnɑːnə skɪn/
/bəˈnænə skɪn/
(British English, informal)- something that could cause somebody to have problems or feel embarrassed, especially somebody in a public position
- Putting even more tax on fuel could prove to be a banana skin for the government.
- The company has acquired an unhappy knack of slipping on banana skins.