A Charleston, S.C. couple got the surprise of their life when Bill Murray crashed their engagement photo shoot!

Photographer Raheel Gauba of Fia Forever Photography was snapping pictures of Ashley Donald and Erik Rogers on the steps of a historic home in downtown Charleston, where the Oscar nominee has a home, when the encounter occurred.

"As I'm looking through the lens, the couple seems stunned and distracted," Raheel explains. "I think to myself, 'Oh great, someone is bothering them.'

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"I turn around and I see Mr. Murray standing there with his shirt pulled up and belly proudly on display which he is patting pretty loudly in an attempt to make the couple laugh."

The photographer adds, "Needless to say I was stunned and I invited Mr. Murray to join the couple for a quick shot. He obliged and congratulated them and went on his way…leaving behind an extremely happy couple and this photo that will be forever remembered."

This isn't the first time the Ghostbusters star has dropped in on a stranger's celebration. Just a few weeks ago, the 63-year-old invaded a Charleston bachelor party and gave a speech!

Related: 'Ghostbusters' Will Return to Theaters For 30th Anniversary — Our 5 Favorite Scenes From the Sci-Fi Classic!

"You know how they say funerals aren't for the dead but for the living?" the actor asked the boys. "Bachelor parties are not for the groom, they are for [the other guys]."

Hmm, what can we get Bill to crash next?!