It goes without saying that every community has their own colloquialisms based upon their shared experiences. And I've found that the MGo community is no different. Though the prevalence of inside jokes isn't so great that its impossible to understand the general gist of what is going on, I find myself understanding what a poster means in some instances, such as when we post for the 'moms' to take some action, but out in the cold in other cases, like references to putting up 63 points on an opponent (generally Rutgers or MSU I think).
Given that there are still too many bloody days until we can actually talk about football, perhaps some of the older folks could post their favorite colloquialisms and some of the newer members could post the ones that they don't quite understand--without fear of being negged to Bolivia.
EDIT: Thank you Seth for the link to the Glossary