Why don't you suck on two of your fingers now for the next minute or two, starting slowly but increasing the pace over time. By the end, you need to be thrusting those two fingers in and out of your mouth as fast as you can. Get them wet with your saliva, because you know where they are going next.
That's right, whore, those two fingers are to go directly from your slutty mouth right into your asshole in a single thrust. For the next minute, you have to slowly and sensually push those fingers in and out of your ass, like you are making love to yourself.
After a while, keep pushing those two fingers into your ass, but begin spreading your fingers as you do. We need to widen that hole for the objects that will be violating you later.