by anonymousdictionary123 October 08, 2017
A pie in which you stick a plastic horse or pony figurine to celebrate a friend's birthday. Especially used if the figurine is Pinky Pie or is wearing a party hat.
We were too broke for candles this year and the store was out of cakes so we got him a party pony pie instead to celebrate in style!
by Harmonyprincess April 23, 2022
Party ponie(s) are any hairstyle, often slutty, that include a hair elastic and are believed to make drinking more fun.
by ThisIsLexi June 17, 2018