Guy couldn't help but admire his new body. He looked... incredible. Almost unbelievably so, really. In fact, it was a bit too much to take. He felt he had to sit down for a while.
Sitting didn't help though. He still felt exhausted, and almost oddly heavy, like he was wearing weighted clothing despite that fact that he wasn't wearing anything at all. Was this some sort of side effect? Had something gone wrong.
"Enjoying the product?"
Guy jumped at the voice, seeing the man from the store now standing across the room from him. "How did you get in?" Guy asked, his curiosity outdoing his need to address his ointment issues.
"Come on," began the old man, "I can make an ointment that gives you impossible muscles just from applying it to your skin and you don't think I could jimmy a lock? But enough about that, how is the ointment working for you?"
"There's something wrong, I feel heavy..."
A malicious grin flashed across the man's face. "Wrong? Oh no, this is exactly what you asked for. You already had an excellent physique and yet that wasn't enough. You felt the need to push yourself beyond your limits. You were rich in body, but in morals you are little more than a peasant, and it is your greed that has brought you to this. Like I said, I gave you exactly what you asked for. Your muscle mass is twice what it was but your strength is not, and so you cannot carry the weight of your own body. That mass shall be the burden of your own foolishness, and you are such a fool that you have no hope of lifting it.
Oh, and one other thing: no refunds."
At this, the man vanished in a puff of smoke, leaving a very terrified Guy sitting in his chair and mulling over the fact that his new muscles will prevent him from ever really moving again.