The viral incident took place while the 79-year-old was speaking in Colorado this week.

Biden’s beloved son tragically died in 2015 from a brain tumor (viaPBS).

I start to break down.

Joe Biden up close

So, it’s not like the pain ever goes away."

So is there more to his slip up than meets the eye?

Nonetheless, haters on Twitter continued to rip into the Democrat fornot knowinghow his son died a dubious notion.

Others went so far as to accuse him oflying.

But perhaps oneTwitteraccount said it best by chiding others for “mocking a grieving father.”