sidewalk alumni
n.pl.— «The real alumni are great fans, root for their school, and support it no matter what. Those here that yell the loudest…brag the most…then bail at the first sign of trouble…are what I call the “Sidewalk Alumni” wannabees at best.» —“Fans voice frustration with Carr after loss to Appalachian State” by ICE223 MLive.com (Michigan) Sept. 4, 2007. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...