President Trump once criticized Sen. Marco Rubio (R-Fla.) for awkwardly sipping from a water bottle in 2013 – but the president just had a water bottle moment of his own. (The Washington Post)

A few years back, Sen. Marco Rubio got a little parched and needed to awkwardly swig from a bottle of water during his Republican response to President Obama's State of the Union address. For this, Donald Trump relentlessly ridiculed Rubio — spotlighting the incident at least eight times.

On Wednesday, President Trump met karma.

While speaking at the White House about his trip to Asia, Trump bent down behind the podium briefly before reemerging and explaining that there was no water down there. “They don't have water,” Trump said. “That's okay.”

Eventually, someone produced a bottle of water, which Trump gladly accepted and drank from. Then he did it again a couple minutes later.

This is something that would be unacceptable to the Old Donald Trump — a sign of a weak constitution.

In February 2016, Trump gesticulated while imitating Rubio: “ ‘I need water. Help me. I need water. Help.’ ”

He then added: “This is on live television. This total choke artist. ...” He later tossed the bottle over his shoulder as the crowd roared.

Apparently, Trump believes people who need water during speeches are choke artists. In other words, by extension ...

And then there are the tweets:

Trump also referenced Rubio's need for hydration in a September 2015 appearance on “Morning Joe.”

“I've never seen a person sweat — I've never seen a guy down water like he downs water,” Trump said. “I've never seen — they bring it in buckets for this guy.”

How embarrassing.

Rubio, meanwhile, did a brief, more dignified victory dance.