To pull a fast one
Meanings of "To pull a fast one"
To con, to deceive someone. Con is a slang term for confidence (game). To gain someone's trust then to take advantage of it by cheating them. To pull a fast one is to switch a thing of quality for a thing of no or little value. It may be figurative instead of literal. "She tried to pull a fast one by changing her grades before her parents saw them."
обманывать; надувать; мошенничать; совершить махинацию