get the drop on someone

get the drop on (someone or something)

To have an advantage over another person; to catch someone else in a vulnerable position or situation. The phrase refers to drawing a gun on someone first (thus causing them to "drop" their own gun). I think we'll get the drop on the defense if we run this play next. The police received an anonymous tip and got the drop on the would-be robbers when they entered the bank.
See also: drop, get, on

get the drop on someone

1. tv. to succeed in getting an advantage over someone. I got the drop on almost everybody by sending in my registration by mail.
2. tv. [for person A] to manage to get a gun aimed at person B before person B can aim back at person A. (The gun is then dropped by person B.) Rocko got the drop on Shorty in a flash.
See also: drop, get, on, someone