Right now President Obama is bracing himself for a half-hour live chat with the Reddit community. Minutes before showtime, users have already submitted 650 comments.

The President announced the AMA (Ask Me Anything) session earlier today:

Hi, I’m Barack Obama, President of the United States. Ask me anything. I’ll be taking your questions for half an hour starting at about 4:30 ET.

Proof it’s me:

<ahref=”https://twitter.com/BarackObama/status/240903767350968320″>https://twitter.com/BarackObama/status/240903767350968320

We’re running early and will get started soon.

“Good luck, Obama,” wrote one Reddit user. “You’re going to need it.”