What have I done?!
Alright, we admit that this is not an outstanding move in any sense. Why would you waste one of your three wishes to make a genie bad at math? And because the genie can’t calculate three minus one, you’re outta luck.
While you’re at it, why not wish for the genie to take all of your teeth out? Or maybe you would like to replace the genie in the bottle so it can roam free in our world? This is an absolutely ridiculous wish to make, and whoever came up with this joke has done the opposite of outstanding.