My stepsons tease me all the time and we all enjoy my Pernaisms. Just yesterday son, daughter-in-law and two grandchildren were over and I was talking about it being "March" when I meant "May", etc. So today in an email to my stepson about something he would like me to do I said I have plenty of time (until June) since it is only "March".

Go with it, like a cat, like, "I meant to do that"