Before your eyes Steve starts to change. His body type seems to expand some places and shrink other. It is as if he is molding in front of your eyes.
"What the heck did you do to me?!" Fear is painted in Steve's eyes. "I...don't feel so... good".
You are also a little terrified, not having expected that the gun would be real.
But when Steve is done changing, he is no longer a nerdy young man anymore, but a busty blonde that could easily be described as a "bimbo". The gun was real.
"What is this?" Steve touches his boobs. His gigantic, massive, bouncy, soft boobs. "What happened to me? What am I?"
"Well," you say, "You're a bimbo".