Finish Him!

This is in reference to Mortal Kombat where every player has a move to finish off the other player.

In real life, what is that one move that your girl uses as a session ender. The move that always puts a bit of fear in your heart, and is her signature way to end you during a session. Something she does so well that it's game over for you everytime?

Ie. For me, it's whenever she gets one ball in each hand, places a thumb on top, and presses into them. Once she has me in that position, it's a real mindfuck how long she toys with me before she decides to mash them and end the session.