Н24
HE НА ТОГО (ТАКОГО) НАПАЛ
highly collHE НА ТАКОВСКОГО НАПАЛ
substand (sentpast only
fixed WO one (often the interlocutor) is underestimating the person with whom he is dealing ( usu. the speaker)
you've (they've etc) picked the wrong person (guy, gal etc) (to fool around with)
you (they
etc) are messing with the wrong person (guy, gal
etc)(in limited contexts) I'm not that sort (of person)you (he
etc) mustn't take me for a fool.