In San Diego, home to the ComiCon, an group calling itself TAG was born. TAG was short for the Tuesday Art Group.
They still share art with one another online...
http://tuesdayartgroup.blogspot.com/
Just a group of artists that met to share an evening of life drawing.
Afterwards ( typically at a Denny's restaurant ) a faux comic book cover was passed around. A "Jam".
The results are mixed but always humourous. The Artists went on to a variety of creative careers in Comic Books, Games, Film and Illustration.
Here from more than a decade ago, GORE HOLE : The TAG Jams
( Cover color by Rick Schmitz )