Stephen Amell’s Oliver Queen and Barry Allen’s Grant Gustin swap lives in the two new teaser trailers for Elseworlds, the Arrowverse’s upcoming crossover event. This Freaky Friday situation should be a lot of fun.

In the first teaser trailer, we see Oliver waking up in Barry’s life and generally being confused about spending the morning with Candice Patton’s Iris West-Allen…

Oliver’s face after the snog really is something else, isn’t it? And thanks to Iris mentioning pancakes, we’re now really hungry.

Next up, we see Barry sparring with Diggle at ARGUS, taking a moment to realise that he’s now the Green Arrow instead of The Flash…

There seems to be an awful lot going on in this crossover: as well as Barry and Ollie’s life swap (and wife swap, by the looks of it), we’ll also see Ruby Rose’s debut as Batwoman, Tyler Hoechlin’s return as a newly-black-suited Superman, and John Wesley Shipp suiting up as the 1990s version of The Flash. And we’ll also get to meet some other new characters, namely Lois Lane and Psycho Pirate.

How on Earth all that fits into three episodes is anyone’s guess, but we look forward to finding out. The crossover will kick off on The CW, for American viewers, during The Flash on December 9th, before continuing the next two nights on Arrow and Supergirl. In the UK, we tend to get the episodes a week later.

We’ll keep you posted as we hear more.