Would that be nose / pipe interface scenario?
Ahhhh, the wonder of a good nose bleed. I once went to Alton Towers as a lad back in the day when they had some form of space based roller coaster inside a giant pitch black dome. I was sat behind a chum in one of the carriages where you sit two to a bench one behind the other in a "riding pillion on a motorbike un-manly hug" stylee. My mate had been on the ride before and was sat in front of me, he thought it would be a capitol wheeze to say "don't bother tensing up whilst we're going uphill, I'll tell you when we get near the drop" and then, obviously, he did not provide the promised warning. More fool he! I lurched forwards, nutted the back of his head and showered him in claret for the remainder of the ride. I'll never forget the "halfway down the ride rip off photo of you screaming" that they put up on screens at the end. My pal rubbing the back of his head, covered in blood, with me, semi-conscious, bleeding all over the shop. Good times. Pity I was a skint kid and couldn't afford the photo...
