Surprise, honey - you've gone viral!

Over the weekend, 30-year-old Chelsea Ranger did something millions of people do every day: She sang along to a song on the car radio. Salt-N-Pepa's "None of Your Business," in this case.

But since her husband secretly filmed the 40-second clip and uploaded it to YouTube with the title "The cutest gangsta I know, my wife," Ranger's solo sing-along has been viewed a startling 3.3 million times. For perspective, that's roughly 26 percent more people than inhabit the entire city of Toronto, where Ranger and her husband, Paolo Salmao, live.

Of course, it's not unusual for the Internet to make celebrities of ordinary folks. (We are living in the age of #AlexfromTarget.) But even by Internet standards, the virality of Ranger's clip seems, well - surprising. It's just 40 seconds of a woman rapping in a car. Not even rapping a difficult song. Not even rapping particularly well! If you are a human with a smartphone, access to a motor vehicle and even semi-theatrical/performative friends, you probably have made such a video yourself.

And yet, in another example of the Internet fame machine's never-ending randomness, this particular video has been chosen for viral fame. Why?

"I think the inside view of a couple enjoying each other's company is the main thing," said Salmao, who's still a little shell-shocked by the video's success. He wasn't seeking attention when he recorded his wife; the two sing and goof around a lot, he says, and often record themselves or take photos for fun.

"Maybe with so much vulgarism and people trying to gain attention online," he says, "when something true and innocent comes along, it gets the credit it deserves?"