When a sleeping person hears a whatsapp ping
on the phone, rolls over, picks up the phone, types out a non-coherent response, and falls back asleep. This
phenomenon is far too common these days because of a
combination of factors: (1) people sleep next to their phones; (2) whatsapp is generally set to sound a ping when a message is received; and (3) common etiquette appears to allow sending whatsapp messages at all hours of the night, despite the fact that the recipients might be sleeping