Pain is relative, usually on a scale of 1 (not that bad) to 10 (a little bit worse than you’ve personally experienced).

So if you get into a car crash or get struck by lightning, such things won’t really bother you anymore.

Otherwise you could set things up to stimulate the same dermatome (patch of skin that has sensory nerves entering the spine at a specific point) in different ways I’d put your feet on sandpaper or flex your toes while doing your legs. Basically there’s interference between the neurons because they’re competing for extracellular ions. It’s why you see people limping round in circles when they stub their toe and why heart attacks cause pain in the left arm. Also why people get worked up having their toes sucked.