U.S. gold medal swimmers celebrate with Big Macs

(CBS/AP) You've just won an Olympic gold medal in the men's 4x200 relay. How do you celebrate?

If you're American swimmers Ricky Berens and Conor Dwyer, you go to McDonald's.

"It was pretty bad," Dwyer said, according to the Associated Press. "A couple quarter pounders, McFlurries, fries."

Berens tweeted a picture of their feast, which included Big Macs.

"We eat so healthy all the time, so I felt pretty gross after that," Berens said.

"I still feel bad this morning," added Dwyer.

The McDonald's at the London Olympic Village, which doles out free food to athletes, has been a source of conversation in the U.K. The restaurant is reportedly the biggest McDonald's in the world - a double-decker eatery that was expected to serve 50,000 Big Macs in just four weeks.

One bookmaker has offered odds on whether a British athlete will be photographed eating a McDonald's Big Mac.