Quickly, you check yourself over. You're still the same size you've always been, everything else in the room is just larger than normal.
You look around the room frantically for another exit, but there doesn't seem to be any except the way you came in. You quickly run over to the door and turn the lock on the knob, keeping your pursuer from getting it.. you hope.
You lean back against the door, trying to catch your breath. An odd sensation around your waist draws your attention downwards though. It feels as though something is beginning to shift underneath your pants.
A faint crinkling noise can be heard as your pants puff out around the waist. You undo the front of your pants, and check to see what's going on, only to discover your underwear has somehow transformed into a large disposable diaper, complete with babyish prints on the front.
"What the?" you ask no one in particular. You tug on the sides of the diaper, trying to unfasten the tapes, but they don't seem to budge even a little bit. The diaper thickens out, forcing your legs apart slightly, and giving you a childish waddle as you step away from the door.
You continue to tug on the diaper, but it's apparently stuck. The tingling sensation returns, but this time it seems to be focussed on the rest of your clothes....