You find some sort of single-piece suit, dark green in most places except for a streak of lighter green-white across the front. It looks like some sort of diving gear, with the rather curious difference that it seems to have the colors and looks of a frog. Must be some sort of Halloween costume. You pick up the suit, and immediately notice its oddly slick rubber composition. While at first you were wondering how to get yourself into the small opening across the front, it seems this stuff is so elastic and tough that you can tug it quite hard and it slaps right back into its original position. Apart from the webbed hands and feet on the suit, the diving mask seems to be exactly shaped like a frog's head down to the wide mouth and bulging eyes. You can't even see the breathing equipment, but you're sure you'll find out soon enough. You wanted to go for a quick dive anyway and as you know no one will be around to see you like this, you figure you might as well test it out.
First you take off your normal clothing until you're completely naked, as you obviously wouldn't go diving with your clothes on. Feeling the slick synthetic material against your skin makes you shiver and ponder this for a moment, but figure there's really nothing bad that can happen. With a bit of effort, you pull yourself into the thin legs of the costume until you can feel your feet in the flippers. You repeat the process for your arms and hands, noticing you still have quite some finger movement ability despite the webbing between the fingers. You pull up the zipper to the top, and pull the odd-looking mask over your face, almost feeling like you're covering it in shrink wrap. For a moment you can't see, but then you regain sight in a rather odd sense as everything looks rather deformed through the frog eyes. You waddle over to a mirror to check yourself out, and are surprised how realistic it looks. Rather pleased with this, your throat bulges and produces a happy "ribbit".
This shocks you, as you never guessed this would be a feature of the suit. You try to say something, but all you hear is a low croak. Deciding you don't want to be freaked out any more, you go looking for the zipper but it seems to have sunk beneath the suit's skin surface after putting it on. You have to find the creator of this thing to see how to get it off, but you can't possibly be seen in public like this. And you start to get a bit of an urge to be in water rather soon.
On top of that, does it only seem like it or did you become a few inches shorter?