You're in a battle with you mortal enemy. Which power would you rather have:
1. The ability to turn any liquid to jello gelatin
2. The ability to chronically chap your opponent's lips
3. The ability to chant limericks until your opponent's eyes glaze over, i.e. not long
While considering your choices, keep in mind that your opponent has the ability to temporarily stun you with his toxic belches. In other words, his power is equally lame.
What shall it be? And if you're feeling creative, tell us how the scene will play out.