Moody Cow Share definition Flag An insulting insult towards someone if they are being moody.. and a cow. Usually Females get called a 'Moody Cow' God Stop being a Moody Cow, Kelly! Moody Cow by NearlyFamous February 22, 2009 0 0 Get merch Get the Moody Cow mug. Buy Now — $32.95 See more merch