It entails an individual who, thinking they're alone, engages in some expressive behavior — wild singing, gyrating dancing, some mild sexual activity — only to discover that, in fact, they are not alone, that there is a person watching and lurking, the discovery of which causes them to immediately cease what they were doing in horror.
Se trata de un individuo que, pensando que está solo, se involucra en una conducta expresiva como canto salvaje, baile giratorio, o alguna actividad sexual leve, solo para descubrir que, de hecho, no están solos, que hay una persona mirando, cuyo descubrimiento causa que inmediatamente dejen de hacer aquello que hacían, con horror.