It seems to me that the best thing about bringing a weapon to WDW is that nobody else there has a weapon, which makes you absolutely invincible.
Imagine how big and tough you would feel knowing that you are armed with a Taser and the guy who is pissing you off has nothing! Imagine how it would be to feel 100% safe in escalating a conflict rather than defusing it, knowing you literally have a secret weapon in your pocket that you can pull out and use whenever you want. Savor the thought of telling that guy to F off and then saying a silent prayer that he tries something so you can finally demonstrate your awesome power! Imagine how children will cry when you tase their mother for bumping your shin with a stroller. You would be a god among mere morals! Go ahead and rub yourself with your Taser while you imagine how, for once, you will not be the weak, pathetic one!
Of course, the fact that idiots think it is a good idea to bring weapons to WDW is exactly why no weapons are allowed at WDW. At least the OP has enough sense to realize that the question should be asked because the answer might be no.