Bottomless Blow Job. A Blow Job with a double meaning: Bottomless meaning no panties allowed, and Bottomless meaning endless or ends when you say so. It is literally the solution to all BJ issues and the bottomless aspect makes it much more convenient if you wish to receive more than just a BJ.
Friend one: Man I hate the time it takes for my girl to take off her panties after she gives me a BJ and we decide to bone.
Friend Two: Have you ever thought of having her give you a BBJ instead?
Friend one: Dude, you're a genius!