NFCM! Posted in N Best definition NFCM! Nearly Fucking Crapped Myself! Acronym to be used in online forums or text messages when expressing a reaction of great surprise, pleasure or enthusiasm towards something. OMG!!!! Hav u seen Lay d Gaga’s nu vid?? NFCM!!! 😉 How satisfied are you with the definition? Looking for NFCM! meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 40 times.