It's hard to deny that "Elseworlds" is going to mean big things for Arrow, The Flash, and Supergirl. It's a crossover event loaded with firsts, from a visit to Gotham City and the arrival of Batwoman (Ruby Rose), to a trip to Smallville and the introduction of Lois Lane (Elizabeth Tulloch). One of the most exciting firsts, though, is the first meeting between Superman (Tyler Hoechlin), The Flash (Grant Gustin), and Green Arrow (Stephen Amell).

As you can see in the clip below, which GameSpot and TV Guide are debuting exclusively, the iconic moment is also a bit confusing. Thanks to whatever is going on with "Elseworlds," Barry and Oliver have switched bodies, leaving the Green Arrow with speedster abilities and The Flash with a great talent for archery. Still, even with the identity crisis, this is a very cool moment.

And, of course, it's also a little funny. Upon realizing they're in the presence of Superman, Oliver quicky puffs out his chest and is immediately called on it by Barry. Something tells us watching these two navigate whatever is happening to them is going to be very entertaining.

What this clip doesn't show, however, is the superheroes in their costumes. As we've seen from the massive collection of photos released for the three-night event, though, there will be plenty of costumed action, including Amell suited up as The Flash and Gustin wearing Green Arrow's hood. Fans will also get to see Superman in a black suit for reasons that have yet to be revealed.

Based on everything we've seen so far, "Elseworlds" looks like the biggest and craziest crossover yet. You're not going to want to miss this event. "Elseworlds" kicks off Sunday, December 9, and concludes on Tuesday, December 11, on The CW.