It's been all over Twitter.

Take a look.

All right, well, the thing people are talking about, obviously, is that the hat Biden's wearing says we just did.

And it's obviously a clever response to the famous Trump's slogan.

Make America great again.

Yeah, it looks like Biden's hat also caught the attention of those on the Trump team because then Donald Trump Jr posted a photo of himself wearing this hat.

But we did it first.

So suck it.

Not a very classy response, which is probably why Kamala Harris posted a picture wearing this hat.

Why don't you say that to my face, Donny, which then got this response from Melania Trump Onley faces yours to suck.

Give to me a break.

Yeah, so it's getting pretty heated.

AOC responded to that picture on Instagram Melania.

I'm not entirely sure what you're trying to say, but I think it's an insult either way.

Bye, Felisha.

Then Eric Trump posted this picture who farted?

Not really sure where he's going there.

Then Rudy Giuliani jumped in with a picture of him wearing this hat.

You corrupt Democrats won't be so smug when I unveil my bombshell evidence of massive voter fraud, 30 million illegal votes and finally, President Obama responded with this picture.

There's, of course, Giuliani in Borat, too.