the act of having sex doggie-style & pulling out (seemingly accidentally) @ which point you allow another male to take over, unknown to the recipient. At this point the first male sneaks out & reappears to the recipient, preferably by waving through a window from the outside.

No Bull Shit, and old hacker acronym which is usually used to signify that the talk will be serious.

The David Blaine is a sexual position where you are having sex with a woman from behind and with out her knowing you let your friend slip in. Then you go outside and wave at her through the window.

Have sex with your girl in the "doggy style" position in front of a window. On the "out stroke" pull completely out and have a friend (or if your from the south, a relative) fill in for you. Hopefully she will never realize the switch. At this point, run outside to the window, stand in front of it and wave at your girl while she is still getting nailed by who she thinks is you.

A time traveling demon.

A peculiar magician who repeatedly performs abnormal stunts. Relying on the attention of the public, this creature is ironically, largely ignored. As the public grows increasingly apathetic his stunts become increasingly odd; as though he is some sort of modern "Houdini," but he isn't, he's just David Blaine

thats when your having doggie style sex with a girl in front of a window and during intercourse you let your friend take over, the girl not knowing, thats when you run across to the outside of the window and wave at her while your buddy is doing it ;)