Based on

Movies like Ponys (2005)

Three friends at a table with a couple of bottles of liquor. One of them introduces the notion of a "pony", an event in your early childhood that is an embarrassment and that marks you for the rest of your life. From then on, revelations about each are made by the other two in an effort to encover such ponys. A more virulent form of the game of telling a secret about yourself.