If you’re on the Facebook (and who isn’t, these days? It’s better than reading blogs for wasting time at work) you’re familiar with its bazillion apps - those little widgets that allow you to “send” your Internet friends virtual items like cocktails, flowers, records and even adorable cyber-puppies. Now, via the social-networking black hole, you can remind your friends of the more irritating parts of Carnival via the app “Crappy Mardi Gras Gifts.” If you feel like dampening somebody’s Carnival cheer, why not send along one of the options pictured above: “Bonnabel and Vets,” perhaps, or “View-Blocking Ladders on Parade Routes.” Or perhaps you prefer something in the line of “Some Dude Urinating In Public?”