A kid in our building accidentally freaked out the old lady in the apartment upstairs by trying to quietly use his headphones and instead sending the sound to her TV speakers. Out of context the explosions sounded like construction demolition and she thought the building was coming down.

Funny story: a guy brings his car into a repair shop for service. Starts watching porn on his phone in the waiting room. Meanwhile the Bluetooth speaker in his car is giving everyone the full audio experience.

Make sure you know what your phone is paired with. Especially if you watch porn.