President Pinocchio Joe is a truly terrible liar

David Gergen : Joe Biden is a terrible liar in every sense; he lies on a terrible scale, and he's terrible at lying.

He says even his most diehard uncritical supporters can't excuse him anymore.

Gergen says Biden just likes to tell humongous self-promoting whoppers, again and again.

Biden 's 9/11 lie was perhaps his most insidious yet.

It's hard to believe a single word that comes out of Joe Biden’s mouth, says Donald Trump .

When he's not actively lying, he's saying insane things like “God save the Queen, man!” nine months after attending Queen Elizabeth's funeral.

And just how appalling a liar do you have to be for Donald Trump to be outraged by your lying?.