This is true particularly between a parent and child. You always say that or you are always doing that to me poison the rest of the conversation unless they are lassoed in right away, before you go on. (By the way, is lasso a verb? Can it be used in the past tense?) Anyway, when you say this, or when someone says it to you, and it goes un-corrected, you (collectively) are leaving a minefield through which you will surely stomp later.