PRINCE HARRY finished his four-month tour in Afghanistan this week, and did a bunch of interviews with the media before he left.

And now there's a clip being passed around the Internet where it looks like he stops in mid-sentence while he's talking to a reporter . . . and runs off because he hears an ICE CREAM TRUCK.

Sadly, it's fake.  He was actually running to his attack helicopter, apparently for something really urgent.  Regardless, the ice cream version is pretty funny.

Here's the real photage of what went down: