Ant McPartlin left Saturday Night Takeaway viewers giggling during tonight's episode as he banged his head during the 'happiest minute of the week'.The 45-year-old was in the middle of the show segment which sees an array of viewers at home win a holiday.It starts with Ant and Dec sliding down a huge pink inflatable slide into the studio, but McPartlin didn't consider the ceiling when he stood up straight.Dec slid down the slide first, before Ant stood up and said: "The happiest minute of the week...ow!"I just banged me head!"Luckily the presenter didn't injure himself badly and brushed off the minor incident before sliding down the huge pink slide.Viewers went into hysterics after watching Ant's blunder, as one said: "Howling at Ant.
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