The horny couple were at a party and found a place to hide so they could have a quick fuck but because one of them was a noisetoy everyone soon knew the lover's secret.
An object that produces a white noise (like a fan, or maybe a radio on a lower volume) that is used to make sounds audible in a very quiet environment not quite as noticeable. Noise hampers can be used to make it harder to hear you doing something you don't want others to know about.
Noise hampers explain why so many people like to masturbate in the bathroom with the shower running.
While Tyrone and Shelly were having sex, Shelly used her fan as a noise hamper so her parents wouldn't hear her moaning.
I had to find a noise hamper so I could fap in peace.