Manager Chris Hughton called it "a bad day at the office" as Newcastle slipped to their heaviest defeat of the season at Bolton with a 5-1 defeat.
The Magpies gave themselves a mountain to climb in the first-half after gifting Wanderers a two-goal head start, and not even Andy Carroll's eighth goal of the season after the break could detract from a day to forget at the Reebok Stadium
Owen Coyle's side grabbed their first after good pressure from Chung-Yong Lee. In the scramble to clear, the referee pointed to the spot after Kevin Nolan was adjudged to have handled the ball and it was left to Kevin Davies to send Tim Krul the wrong way from the resulting penalty
Despite pushing for an equaliser, Newcastle found themselves two down 20 minutes later when Matt Taylor's free-kick rebounded off the crossbar and fell kindly for Lee, who made no mistake from close-range.
Just five minutes after the restart, Bolton added a third when the impressive Johan Elmander was played in by Davies before coolly rounding Krul and tapping into an empty net.
A glimmer of hope was offered up by Andy Carroll two minutes later as he banged in an angled drive to give United hope. But that optimism was all but extinguished soon after when Elmander grabbed his second of the game to make it 4-1.
Things then went from bad to worse for Newcastle when centre-half Fabricio Coloccini was shown a straight red card by referee Howard Webb for elbowing Swedish striker Elmander.
And salt was rubbed in in stoppage time when José Enrique was adjudged to have fouled Davies inside the box and the forward picked himself up to score his second penalty of the game.