psych somebody ↔ out
From Longman Dictionary of Contemporary Englishpsych somebody ↔ out phrasal verbinformalNERVOUS to do or say things that will make your opponent in a game or competition feel nervous or confused, so that it is easier for you to win → psych→ See Verb tableExamples from the Corpuspsych out• If the episode was staged to psych me out, it worked.