President Obama and Mark Zuckerberg up at Facebook headquarters in Silicon Valley

U.S. President Barack Obama (L) talks with Facebook CEO Mark Zuckerberg during a town hall style meeting at Facebook headquarters on Wednesday.

You know the President has some pull with Facebook's Mark Zuckerberg if he can get the normally hoodied CEO to wear a tie.

And that's just one signal that Obama and Facebook have gotten very friendly.

The duo appeared at a town hall event at the social media site's headquarters in California's Silicon Valley on Wednesday. The President tackled a number of subjects, including health care, immigration and the economy.

Obama answered pre-screened questions at the campaign-style event in front of a mostly young audience, the same group that helped carry him to victory in 2008. The president has been trying to jumpstart enthusiasm among younger voters as he kicks off his re-election effort.

The president promoted his deficit-reduction plan of spending cuts paired with tax increases for the richest Americans. He told the 26-year-old billionaire that they would both have to pay more taxes.