five finger game

An icebreaker game in which one person shamelessly admits five core traits that make them who they are to a complete stranger.

The Five Finger Game generally involves spreading your fingers apart while placing your hand on top of a flat surface. Then, using a sharp item, such as a knife or sharp pencil, you stab the space in between your fingers while moving quickly but you have to avoid self-injury.

Google's definition:

The knife game, pinfinger, nerve, bishop, knife fingies, five finger fillet (FFF), or " stab between the fingers game ", citation needed is a game wherein, placing the palm of one's hand down on a table with fingers apart, using a knife (such as a pocket or pen knife), or other sharp object, one attempts to stab back and forth between one's fingers, trying not to hit one's fingers.