the time when a ballgame that you are watching becomes really exciting, usually in football or basketball as the clock begins to tick down during the fourth quarter; the climax of a sporting event.
Marv Albert on your tv- "lebron james with a fade-away three, and the crowd erupts! lakers and cavs now tied in the fourth!"
stoned/drunk guy on couch- "yeah man, looks like a DANK GAME ALERT!"
When one comes across people acting in a manner that is the epitome of the college lifestyle, one may alert others of the occurance.
Walking through the Quad and witnessing people playing frisbee and tanning, George screams "College Alert!".
When a drunk freshman girl stumbles out of a bar and a friendly senior male helps to find her way back home, Bobby high fives Charlie as they both state "College Alert" while nodding their heads in approval.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.