What happened to Joe Biden??

On November 23, 2021, Biden delivered remarks about the current economy is doing, according to him. But, Bidens incoherent ramblings aren't the bizarre part of his speech, this time. Take a look at his eyes and his teeth, do they look normal to you? Was this Biden or someone or something else that we just witnessed?

Original News Conference on November 23, 2021- Biden delivers remarks about the economy.

https://www.youtube.com/live/OdLIVVeQHYI?si=i8Jchn7bmhbppan6