Sherri Shepherd may have just screwed herself over in her child support war, all because she celebrated a birthday ... the Bd of Jesus Christ himself. The Backstory: Sherri's ex-hubby, Lamar Sally, has been trying for months to move their child support case from NJ to CA where he'd get a way bigger check. The Snafu: Sherri insists the case should be heard in New Jersey because that's where she lives, but sent an Xmas