Noticing when I’m told to do something that I usually do already, as a routine, as in “don’t forget to turn out the lights when you leave” — perhaps because I’ve neglected to do it recently, or because there’s been a perception of such neglect, or simply to ensure that I don’t forget on this occasion — I will forget to do it, not as an act of rebellion, but as if my routine of doing the thing has somehow been cancelled by the command I’ve received to do it.