I don't really have this problem - I though, sometimes interrupt others - not meaning to be rude - but when a 질문 enters my mind - if I don't get it out - I sometimes forget it - only to remember it after the person has gone. Also, sometimes I am in a hurry, and I have to interrupt the person - to get to the bank on time 또는 to be at the 도서관, 라이브러리 on time.