'It's Rubio!': Trump mocks Florida senator guzzling bottle of water

Anyone who watched Marco Rubio blast away at Donald Trump at Thursday night's debate in Houston knew one thing was coming: a full-scale, vintage Trump counterattack on Friday.

And, oh boy, was there. Yes, there was the surprise announcement that New Jersey Gov. Chris Christie was backing the New York billionaire. But high-profile endorsements are nothing new to campaigns.

Mocking impersonations of a rival's well-known water habit by the front-runner? Well, that's a whole other story. Check out the Vine below, courtesy of Politico.

Not enough for you? Try this angle:

That, of course, was only one of Trump's broadsides against the Florida senator Friday. He also took to Twitter: