Here is what I suggest. Rent a large building like an airship hanger. Construct a big funnel big enough at the mouth (of the funnel) to accomodate 280 men stading about it's circumference on an elevated platform simulataneous (2 pi r? pi r squared? I don't know in no way how to calculate this.) The bottom of the funnel would taper to a nipple small enough to fit into the mouth (of the young woman subjecting herself to this in front of media recording devices). Also, the inside of the funnel would be coated with a, uh, coating that, like, resists cohesion.Coated with polymers of something or other, you know. In such a way shall the ejaculates deposited into the funnel flow swiftly downward like mercury and into you know where. In her mouth, that's where. In such a way shall your dream of a yard of cum being swallowed by a young woman on video be realized in a monstrously swift yet timely manner.