"Pfft, right," Nick responds sarcastically. "Like it would come true if I said that I wish your muscles to grow bigger."
As soon as Nick has finished the sentence, you feel a strange, tingling sensation all over your body. You look down at yourself and gasp as you see your pecs bulge a little bigger, pushing outward. You look at your forearms, which are beginning to swell thicker.
You being to panic a little, and turning to Nick you hiss: "You idiot! What have you done?" For a second, Nick seems confused, but then his eyes widen. "You... you're growing bigger!"
Your can feel your obliques and quads swell harder and thicker. You know you're getting heavier, but you also feel lighter because your strength is increasing with each passing second. It almost looks as if your clothes were shrinking, but in fact it's you growing thicker and stronger. The sleeves of your shirt are slowly getting tighter; your pants look less and less baggy as more and more mass is pushed into your calves and quads. Your back widens as your lats begin to spread, wider and wider, slowly but surely.