I've also heard it sarcastically said that folks who swear should consider how proud it makes their Mother but after hearing some Moms at my Grandsons' football practice recently I'm not sure that warning is still a good deterrent today.
Oh, you must have not heard, moms at ball games/practices get special dispensation!
Oh and never, I repeat never, call them down during a tirade! You will learn why you are scared of the dark! I assure you! Don't ask me how I know.