The federal government sent phones buzzing and Twitter atwitter when it tested the Presidential Alert System for the first time Wednesday afternoon.

#PresidentialAlert quickly shot up the chart to become the top Twitter trend.

Around 2:18 p.m., millions of cellphones across the country received this message:

“THIS IS A TEST of the National Wireless Emergency Alert System. No action is needed.”

But many did take action on social media.

“I’m gonna circumvent twitter and just start texting you directly,” wrote Joel Hodgson just minutes later.

“And so it begins. If he starts using this like Twitter, I’m going back to a land line #PresidentialAlert,” Kate McGee posted on Twitter.

Some of the reaction played off President Trump’s habit of sending out messages to his nearly 55 million followers at all times of the day and night.

“I bet the presidential alert system is going to be used how Donald Trump uses twitter and collectively we will at get 7 alerts in the middle of the night,” said Emelie.

And some immediately sought to block the alerts.

“Do. Not. Want. Wrong number. Lose my number,” said Rebkah Howard.

And others encouraged the president to keep his political thoughts separate from the alerts.

“Hopefully @realDonaldTrump doesn’t get any ideas and start running his mouth with the #PresidentialAlert instead of here on Twitter. Don’t get any ideas Mr Orange.

Keep your random thoughts here where they don’t belong. lol,” said Todd Maddex.