By Lindsay Rogers AirDropping to strangers is not a new thing. A few months back, while waiting in an absurdly line for a ride at Universal Studios with my sister and partner, someone unfamiliar to me AirDropped me a photo of a clownfish overlaid with the question: “Where the fuck is my dad?” For the uninitiated, AirDrop is a file-sharing feature on Apple devices that lets users “drop” photos and videos, among other things, to other Apple devices using Bluetooth and Wi-Fi, from up to 30 feet away. Via your settings, you can either opt to receive from everyone (literally, everyone), or only fro…