Ariana Grande returned from filming 'Carpool Karaoke' with a mysterious hand injury

Pretty much the only guarantee when watching an episode of Carpool Karaoke is that something unexpected is probably going to happen.

Ed Sheeran taking on the Maltesers challenge. Miley Cyrus licking stamps. Madonna twerking in the passenger seat. The list goes on.

Anyway, it looks like Ariana Grande's upcoming episode will be absolutely no exception to this.

On Tuesday, James Corden teased the episode with some song lyrics...

This Tweet is currently unavailable. It might be loading or has been removed.

This prompted an exchange with Ariana herself.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

Flash forward to Tuesday evening, and it sounded as though the filming went well.

This Tweet is currently unavailable. It might be loading or has been removed.

(Sort of.)

This Tweet is currently unavailable. It might be loading or has been removed.

Yep, that's Grande with her hand bandaged up.

Unsurprisingly, people had some questions.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

This Tweet is currently unavailable. It might be loading or has been removed.

Roll on the next Carpool Karaoke episode.