That's the title of a video clip from Clint Smith, director of Thunder Ranch. I've had the pleasure of meeting Clint at the original Thunder Ranch in Texas, where I did two courses, although I haven't (yet) been able to visit his new facility in Oregon. As usual, he talks solid common sense. If you're wondering about a 'defensive rifle', and don't have the budget to buy one, his alternatives will be very reassuring.
I recommend all of Clint's videos at the Thunder Ranch channel on YouTube. They're interesting, informative, and a lot of fun. Go scroll through the videos on offer there.
(A tip o' the hat to Ordnance Corner, where I found this video.)