ppl do korek hidung when the person is in 'idle', not doing anything...in a secured placed..where you're all alone. it is a build-up habit.
being alone in a car..road congested..nothing to do...feels kinda secured...not reliazing that other people are looking !
being alone in a car..road congested..nothing to do...feels kinda secured...not reliazing that other people are looking !