Pull the rug out (from (under) one) phrase
To abruptly stop helping or providing support or assistance to someone, especially when that person is in a troublesome situation.
John pulled the rug out from under Mary. I saw him catch her hand, but then he dropped.
Mary promised to finance my project, but when I went halfway to completing it, she pulled the rug out from under me.
The verb "pull" must be conjugated according to its tense.
The image is undeniably clear, but a more common practice, it would seem, would be the schoolboy trick of pulling a chair away from someone who is about to sit down. It is "rug", however, that became part of a common turn of phrase, originating in the mid-twentieth century. Time used it in an article about labor and the economy in 1946
1. A type of soup that contains small pieces of pasta shaped into letters.
2. A mixture of letters which make you confused to understand, usually acronyms or abbreviations
1. I enjoyed alphabet soup when I was young.
2. The name of the organization is an alphabet soup of A.D.B which stands for Asian Development Bank.