Catch somebody off guard

The phrase “catch sb off guard” means to surprise someone by doing something which they are not expecting and are not ready for.

Some Excerpts:

From TV shows, movies and novels

24

Kim Raver (Audrey Raines) used the phrase “catch somebody off guard” while talking to Kiefer Sutherland (Jack Bauer) in the season 4, episode 1 of the popular TV show “24” as shown below: 

Bold and the Beautiful

Katherine Kelly Lang(Brooke Logan) used the phrase “catch somebody off guard” while talking to Jack Wagner(Dominick Payne Marone) in the popular TV show “Bold and the Beautiful” as shown below:

Tags: 24, Brooke Logan(The Bold & the Beautiful), Jack Bauer, Kiefer Sutherland, Nick Marone, The Bold & the Beautiful