Alli Kat Share definition Flag One of the most amazing people ever. Her name can double as a prostitute's pet name. "I was walkin' down the street and i saw an Alli Kat walk past me. It was hot." Alli Kat by Kevodagreat December 21, 2008 0 0 Get merch Get the Alli Kat mug. Buy Now — $32.95 See more merch