It didn't take long for President Obama to respond to Clint Eastwood's "Invisible Obama" routine, which took place at the 2012 Republican National Convention on Thursday night and became a meme that spread like wildfire across the Internet.

Obama tweeted a picture — sent from the @BarackObama account, run by his campaign — of him sitting in a chair marked "the President". His caption: "This seat's taken."

The tweet came not long after actor, director and former GOP politician Clint Eastwood made a rambling speech that featured him talking to an empty chair.

“So I’ve got Mr. Obama sitting here … Mr. President, how do you handle promises you’ve made?” he asked the chair. It gave no response.

The speech almost immediately spawned an @InvisibleObama Twitter account, which attracted more than 30,000 followers in just a few hours.

Watch Eastwood's speech here.

For a look at more Eastwooding memes, check out the gallery below.