you could have heard a pin drop

could hear a pin drop

Could hear nothing at all because it was completely quiet and still. After the boss's outburst, the meeting room was so quiet you could hear a pin drop. Waiting to see what happened next in the play, everyone in the audience stayed so quiet you could hear a pin drop.
See also: could, drop, hear, pin

you could have heard a ˈpin drop

it was extremely quiet: When the play finished you could have heard a pin drop.
See also: could, drop, have, hear, pin
References in periodicals archive ?
A voice suddenly piped up: "More like cake retention!" You could have heard a pin drop.
Louis Post-Dispatch: "You could have heard a pin drop on the floor of the Missouri House during a recent mock debate to train freshman legislators after newcomer Representative-elect Cynthia Davis, Republican-O'Fallon, committed the first gaffe.
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