fall for s.t. மோசம்போ mōcampō (moosam poo) (3b intr) be deceived by; be taken in; have the wool pulled over o's eyes; be taken to the cleaners
Usage:
நான் அவனிடம் மோசம் போனேன் nāṉ avaṉiṭam mōcam pōṉēṉ naan avankiṭṭe moosam pooneen I fell for it--hook, line and sinker