To greet someone in public that you used to hang out with frequently, then you explain how you need to hang out.
All while having no intention to hang out or ever see them again.
{Sarah and Jane, two ex best friends run into each other at the mall}
Sarah: "Oh my god I miss you we need to totally hang out!" (Is being Emily Parolin)
Jane: "Yeah we do it's been so long, I miss you too! Does Saturday work?"
Sarah: "Yea text me Saturday!" *Ignores all texts and calls*
The Art of slamming ones own fist into the face of an enemy or someone that has just instantly "raged" you.
Billy Badass: Hey Kid! Your mom is a stinkystinkysmellypoopooface!
Little Johnny: Oh NO!
*PaPOW!* (litte johnny slams his fist into Billy Badass's face)
Little Johnny: Who's the stinkystinkysmellypoopooface now!?!
(Little Johnny proceeds PaPOWing Billy baddass's face)