Stands for
Old Man Game, a realization that sweeps over men as they age in their 30's that they are no longer the young guns they once were. Indicated by taking an interest in things once thought uninteresting including PBS, current world affairs, walking laps at the mall in Velcro shoes, telling younger neighbors about the pitfalls of irresponsibility, identifying music from younger years as
the greatest ever, being called weird by your children if you have some, being in bed before 9pm on a work night, not knowing who most of the musical guest are on award shows, and a general un-kewlness that is not easily covered by the word kewl. Used in everyday
conversation as #OMG as a way to replace the standard understood meaning OMG because that's what being old is about. Using a hashtag to retain slight kewlness with the kids.