ถอนหงอก

From ถอน (tɔ̌ɔn, “to pull out; to remove”) +‎ หงอก (ngɔ̀ɔk, “white hair”); literally "to pull out (someone's) white hair".

ถอนหงอก • (tɔ̌ɔn-ngɔ̀ɔk) (abstract noun การถอนหงอก)

1. (idiomatic) to treat an adult or senior with contempt or disrespect; to show contempt or disrespect towards an adult or senior; to subject an adult or senior to contempt or disrespect.

   โดนเด็ก

   doon dèk tɔ̌ɔn-ngɔ̀ɔk

   To be disrespected by a younger person.
   (literally) To have one's white hair removed by a kid.