Abdullha Abdulhameed, an Iraqi man in Sweden, posted the video of his encounter with Swedish security guard Kalle Alm speaking fluent Arabic video to Facebook.
The original clip has been viewed almost 850,000 times and shared more than 5000 times, the BBC reports.
In the video, Mr Abdulhameed asks how Mr Alm, also called "Abu Kevin" which means father of Kevin, if he really is Swedish.
"Yes I'm originally Swedish," Mr Alm responds.
"How did this happen? How did you learn Arabic?" Mr Abdulhameed asks.
Abu Kevin explains he is married to a Syrian woman and has two children, Kevin and Sandy.
He added that he learnt Arabic from watching well-known Syrian TV show “Ghawwar Toshe”.
"I love speaking Arabic, I learned from watching TV," Abu Kevin said.
Mr Abdulhameed first met Abu Kevin three years ago in the Swedish town of Västerås, and when he bumped into him again at an unidentified checkpoint he made sure he filmed the encounter.
"I couldn't believe that a Swedish security guard spoke Arabic and knew about a show that is broadcast on Syrian TV," he said.
Arab social media users embraced Abu Kevin, praising his fluent Arabic.
"Instead of his wife having to learn the language, she had him learn hers. Good on her. Seriously though, good on him for learning to speak this way this fast,' Basel Any wrote on Facebook.
Social media reaction to Abu Kevin video. Source: Sveriges verklighet
":D it’s a proper old damascene accent, with all its stretches," Rhama Kouly wrote.
Basem Khaled Khaled joked to his friends, "I’ve been trying to teach you Swedish for two years, Swedes already learnt Arabic."
Another user, Mazen Al Atrash, said "I think there is no point of us learning Swedish anymore, soon enough Uncle Gostav will start preaching in Syrian Aleppo dialect.
