Lil Pony Share definition Flag A man who acts straight but is clearly homosexual and commits acts of infidelity. I know Tony is married but Ive been seeing him all up Ronnies ass. He is acting like such a Lil Pony. Lil Pony by angd May 19, 2020 0 0 Get merch Get the Lil Pony mug. Buy Now — $32.95 See more merch