Noun. Often facetious or derogatory. The blending, or portmanteau, of Brain Fart and AARP. A lapse in memory or thought for those not quite old enough to be having a Senior Moment but being close to or having reached the minimum membership age (50) of AARP.
"He forgot his cell phone again? If he has one more brain fAARP, we'll just start calling him grandpa."
Word made up by CBS for the show Criminal Minds. Episode titled The Black Queen, aired 01-05-14. Show hinted it was a sexual act involving food and oil based paint. Fans quickly searched the internet for a definition, but since it was a made up word, no definition exists. "Flarpy Blunderguff" quickly trended on social media sites such as Twitter and Facebook.