If you can manage it, this is a position she'll never forget.
Here's What You Need:
Just the two of you.
Here's How You Do It:
Get her naked. You, too.
Sit on the edge of the bed and have her stand in front of you.
Tell her to place one leg on the bed, then the other, and sit on your lap as your enter her.
Now that she's sitting on your lap with you inside of her, have her place her arms around your neck and wrap her legs around your waist. After she's done this, stand up. Put your arms under her buttocks to help stabilise her.
Walk to the nearest wall and let her back rest against it. Now you're ready to thrust in and out of her as you hold her pinned against the wall.
Continue until she reaches an indescribable orgasm, or the neighbours start banging on the wall. In that case, switch walls and keep going!