It was the private voicemail message not meant to be shared and yet ended up being heard by nearly everyone — Alec Baldwin's angry April 2007 tirade against his daughter, Ireland, accusing the then-11-year-old of being a “rude little pig” who needed to have her “ass straightened out” after she had “humiliated me for the last time.” Only now, as the Emmy-winning “30 Rock” star admits in a candid interview with Playboy for its July/August issue (on newsstands and online Friday), after the phone message was exposed, he contemplated killing himself.