A game that Jeb Jab loves but Rex Mohs absolutely despises. Scott uses it to get Jeb and Rex to come over.
Scott: "Come over and we can play *looks at hand with an image of Gex on it*... Gex."
Scott: "Did not take you as a Gex fan."
Rex: "Oh, I'm not. I knew you were lying, and I'll do anything not Gex related."
Jeb: "Is it Gex night? I've been waiting for this day for years!"
Scott: ".... Yes."