0 a sudden unexpected situation that makes a person appear silly or causes them difficulty: --
The new tax has proved to be a banana skin for the government.
He also owns an old banana skin blanket which he is very protective of.
In short, the cabinet slipped over a banana skin according to this paper.
As a banana skin was found in a dustbin in the shop after this time, it is thought she must have returned there.
I would say that this is a banana skin if ever there was one, and he knows that he would not wish to tread on it.
I do not know how one manages to pick up a banana skin and slip on it, but it just shows the dangers that attend these colourful ventures into speech.
This is not even a banana skin.
He leaves behind a bag of tools or a banana skin.
Another weary old cliche is "the banana skin".