Vince Vaughn and Ron Paul at Ron Paul's annual BBQ at his home in Lake Jackson, Texas. (Gage Skidmore/flikr)

A curious photo, posted by Flickr user Gage Skidmore, emerged on the Internet Monday of actor Vince Vaughn and former Rep. Ron Paul helping themselves to some grub. It turns out Vaughn and Paul have been buddies for some time, and Vaughn was a guest of Paul's at his annual barbecue at his Lake Jackson, Texas, home Saturday.

"They've know each other for four or five years. Vince Vauhgn contacted Dr. Paul because he was interested in monetary policy and his book 'End the Fed,' " explains Megan Stiles, an attendee of the private BBQ who works for Campaign for Liberty, Paul's 501(c)(4) organization.

Vaughn explained as much when he introduced Paul at 2011's Liberty Political Action Conference.

"I think he was a little surprised to think that I was calling him but I was just impressed with his talking points on that subject and his willingness to get out there and really keep beating that drum," the "Wedding Crashers" star said at the conference.

Vaughn also told the Rolling Stone in an interview last month, "I really do like Ron Paul – I agree with him on most things." Paul and his wife, Carol even attended the premiere of Vaughn's movie "Couples Retreat" in 2009.