Answer: switcheroo

AnswerCrossword Clue
SWITCHEROOSurprising variation
SWITCHEROOUnexpected reversal, in slang
SWITCHEROOCounterscam
SWITCHEROOSudden reversal
SWITCHEROOUnderhanded change, slangily
SWITCHEROOSlangy reversal
SWITCHEROOTricky swap
switcherooan unexpected or sudden change or reversal in attitude, character, position, action, etc.
switcherooA change, reversal, or exchange, esp. a surprising or deceptive one
switcherooa surprising variation, a reversal