The story
A back-formation from pull the rug out from under.
Etymology from Wiktionary, CC BY-SA 4.0.
rug-pull
Today it means: A sudden revelation that completely contradicts the assumptions one has been led to believe. Full definition →
Today it means: A sudden revelation that completely contradicts the assumptions one has been led to believe. Full definition →
A back-formation from pull the rug out from under.
Etymology from Wiktionary, CC BY-SA 4.0.