​Today marks the return of one of the most iconic sandwiches in McDonald's history, the legendary McRib. After vanishing from menus in 2006, the McRib is finally making a return appearance (at least in Southern California) and will be on menus for a "limited time only." McRib sightings have been rampant on Twitter, and loyalists of the on-again-off-again sandwich are scampering to score their fix while they can.

So far, there has been no confirmation regarding how long we can expect the McRib's appearance to last, but judging from past experience, it will probably disappear just as soon as we start to take it for granted.