Almost instantly as the first few trickles of water slide down your throat you begin feeling warm again. The thick fur coat you're wrapped in isn't helping matters. You quickly dive off the fountain and streak back to your clothes just as the heat reaches it's climax and the changes begin.
You find yourself suddenly growing in size. The room gets smaller as you grow bigger, so big that the fountain is now at your eye level. Your front and rear paws are growing in size, separating and elongating again into human fingers. Even your thumb grows back.
Your legs start growing at an alarming rate, lengthening, forcing you down to your stomach as they grow out behind you. They get thicker as well, gaing human proportions again. Meanwhile, your chest area is expanding as well, neck getting smaller and torso reformign to one much more primate than feline in shape. Your arms crack and bend the right way as well, lengthening to their normal sizes. You grow a little larger and longer before everything stops.
You jump back up, grateful to be human-shapes again, and wait for the rest of your feline attributes to regress. However, they don't. Looking yourself over, you're now human in shape but for some reason still retain your gray fur and tail.
Running over to the fountain and looking at your reflection, you gasp in shock. Your head is still that of a cat's (albeit now proportioned to fit on a humanesque body). You run your furry hands over it, feeling the fur shift under your fingers and whiskers sensitive to every touch. You have gone from a full cat to an anthro cat. Saying a few sentences, you find that you sound like yourself again, although your voice is thicker and you seem to hold your R's for longer.
At least it's a step in the right direction, you think, looking forlornly over at your shredded clothes. You wish you hadn't torn them up when you crawled out of them.