You're probably wondering what makes a person weak in the face of self-defense. Well, let me tell you, friend.
1. Lack of Coffee - Without a caffeine boost, even the most seasoned martial artist is a slumbering bear.
2. Exhaustion - A defenseless person is a person with too little rest and too much procrastination.
3. Distrust of Authority - If you're always questioning your instructor's motives, you'll never make it past the first punch.
4. Inability to Follow Orders - Self-defense is all about instinctive reaction. If you can't even follow a basic command, you're toast.
And, of course, the ultimate weakness: Lack of Pants - A defenseless person is a person without any pants.
Stay vigilant, stay alert, and always, always wear pants.