You copious amounts of coarse black hair start creeping up along your arms and your exposed belly. It's thick and increasingly exponentially, a forest of glistening black fur, matted with sweat and stinking. It travels up your flabby chest and across your double chin, and you can feel your face deforming and pushing outward into a muzzle as it creeps up your head. Your pudgy fingers develop animalistic clows, you can feel your toes changing similarly too, as streaks of white running down your arms and legs cut through the creeping black fur. Your hair likewise turns black with white streaks. There was no denying what you were becoming, you were turning into an anthro skunk.
And as you felt a pressure in the base of your spine, a large, fluffy tail began to emerge from your hindquarters, black and white and sticking upright, a monstrously loud fart being blasted into the seat of your pants and filling the room with a toxic, skunky odor. You were a huge, fat anthro skunk slob now.
You look at the Anthro-Slob Light in your fat paws, fascinated, before your vision scans the rest of the magic shop, those claws going to work scratching your enormous belly under the dirty, stained sleeveless shirt you wore. This felt amazing.