bowl a googly
Definition from Wiktionary, the free dictionary
From the cricket term
- (transitive, idiomatic, UK, figuratively) to surprise (someone); to introduce (to someone) something unexpected, underhand or requiring a quick reaction or correction.
- Fred bowled me a googly when he asked me to explain those statistics in the meeting.
Usage notes 
- The object of bowl a googly is put immediately after "bowl" (as in the example given here).
to require a quick reaction from by doing something unexpected