“That was nearly a YouTube moment,” Chris Martin said after falling through an open trap door and getting caught by a crew member. Or maybe it was just distraction by a record-breaking crowd that led Chris Martin to take a tumble through a trap door at Coldplay’s Sunday concert in Melbourne. In footage captured by concertgoers and posted on social media , the 47-year-old musician points to several fan posters and flags before stepping backward into an open trap door. From below the Marvel Stadium stage, a crew member extends his arms to cushion Martin’s fall. Peering down through the stage door, Martin thanked the crew members who came to his rescue, joking, “You get a bonus, you get a bonus.”A representative for Martin did not reply immediately Tuesday to The Times’ request for comment.