Someone asked Biden at end of presser today "do you want to reconsider dropping out of the race," Biden answered ‘I’m back in’.

https://www.whitehouse.gov/live/

It's still live so no time stamp, but just as he leaves the podium he does say it.

per CNN

Someone asked Biden at end of presser today, Biden answered ‘I’m back in’.

Cnn said it was a joke.

Was it?

I'm looking to sauce it right now