A three dimensional pyramid built by poker chips you have won during the course of the game. It is used in lieu of simply putting the chips in stacks because it looks more intimidating.
Taken from "Freytag's Pyramid", a device that outlines the plot for mad literature.
Few players will raise you pre-flop of you have a Freytag.
"How did Devin get two Freytags? Jesus!"
"Cause he's the fuckin man, thats how."