Watch How One Man Turned the Tables on an Attempted Carjacker

"You went to bed and woke up stupid this morning, huh?"

That's what Hashim Fannin said as a would-be carjacker lay flat on the ground with his hands up, a gun pointed squarely to his back.

Fannin said he was pulling into a parking spot at the Family Dollar in northwest Atlanta earlier this month when Edgar Horn, 61, slid into his passenger seat and allegedly said, "You know what this is."

That's when Fannin pulled out a small handgun and "asked him to get out of the car, probably not in those exact words," Fannin recounted.

When police arrived, cell phone video showed Fannin waving police over, then calmly dropping his weapon. One officer even extends a hand in gratitude before tending to the hapless criminal.

"Honestly, I look at it like this. That is one less guy I got to worry about bothering my mom when she's out grocery shopping," Fannin told ABC affiliate WSB.

Horn was arrested for attempted robbery and entering an automobile, according to a police report.