
Spring a trap
Strategic Surprise
Used when someone sets a well-planned trap to catch others off-guard, often in a strategic context.

The detectives had to think smartly to spring a trap on the elusive con artist.
Idiomatic Usage
This phrase is commonly used idiomatically to describe clever tactics beyond physical traps.

With clever questioning, the lawyer managed to spring a trap during the cross-examination.
Preparation Implicit
Implies prior planning and effort to create a successful setup to catch someone.

The sting operation took months to prepare before they could spring a trap on the ring.
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