When your listening to music and think the song is sung by a 15 year old girl but it’s actually made by a 50 year old guy. The mistaking can happen with any combination.
Byron was listening to the song Star Song, and thought it was song by a middle school boy. On further research, Byron concluded that the song was sung by a adult woman. Byron was Age/GenderMusic Mistaking.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.