You then decide to wish to be fierce. It sounds like a good wish. It shall eliminate the taunts and annoying remarks forever. Besides, you do not see what can possibly go wrong with this wish. How will the genie ever trick you over that, even if she wanted to do so? This genie does seem in a bad mood but well, maybe you interrupted his nap or he just wants to get rid of you and get the three mandatory wishes over with as fast as possible.
"I think I'll wish to be fierce."
"Fierce, you say?" asked the genie with a raised eyebrow.
"Yes, and be powerful and respected. That is my wish. I wish I was fierce, as in respected, feared and powerful!"
"As you command," says the genie in a bored voice and snapping his fingers.
He doesn't sound impressed, this genie. Rather uninterested in what you ask as wishes. Maybe he's just grouchy. At any rate, you still do not see how the genie could screw you over with this wish. Alas, that is where you're wrong. The genie thought in a jiffy how to interpret your wish and he found results that he would find very entertaining. For him, of course. Certainly not for you.