BDP - Brake Donkey Power. As opposed to BHP, Brake Horsepower. Unit of measure the power output of slow vehicles' engines at the crank (i.e. does not include loss in power through gearbox, sprockets etc en route to drive wheel(s)). Slang.
1. My Lada puts out 15 donkeys man, it's an animal!
2. Your Harley has brake donkey power, not horsepower!
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.