개구리 올챙이 적 생각 못 한다더니 · 개구리 올챙이 적 생각 못 하네요
to forget one's humble beginnings; said of someone who succeeds and looks down on beginners
Example
개구리 올챙이 적 생각 못 한다더니, 선배가 신입 사원 실수를 너무 비난해요.
He's forgotten where he came from; our senior criticizes new employees' mistakes way too harshly.
Word parts
Literally 'the frog can't remember when it was a tadpole.'
Good to know
Said in one breath as [개구리 올챙이쩍 생각 모탄다]: 적 sounds like [쩍] after 올챙이, and 못 한다 runs together as [모탄다].