A bug in Apple's FaceTime video calling service that let users eavesdrop on their friend before they had a chance to answer the call. Discovered in 2019, when a second person was added to a group call, the mic and camera were opened on the first person's iPhone before it was answered. Comedians joked that people would finally know what their friends thought of them if they heard "oh no, so and so is calling again." See FaceTime
A Real Facepalm
A facepalm is actually a word that means people are covering their face with their palm to express dismay or anxiety.