YOU ARE READING Word of the day Random MIRF 8 0 0 by riv-er by riv-er Follow Share Post to Your Profile Share via Email Report Story Send Send to Friend Share Post to Your Profile Share via Email Report Story MIRF- (merf) noun. acronym from Mom I'd Run From. The opposite of a MILF. A mom you would defenitely not want to do. Example- "I don't know where she gets her good looks, her mom is a MIRF!" "Your momma is so ugly she's not a MILF she's a MIRF!"