Nice, catchy phrase but there's no reason even a full size handgun should be uncomfortable with a proper belt and holster. Sometimes clothes don't permit that type of carry and a good pocket pistol is a must.
Jim's Rules of Carry: 1. Any gun is better than no gun. 2. A gun that is reliable is better than a gun that is not. 3. A hole in the right place is better than a hole in the wrong place. 4. A bigger hole is a better hole.