I know 9 facts about you:
Fact 1: You are reading this.
Fact 2: You can't say the letter 'm' without touching your lips.
Fact 3: You just tried it. 
Fact 4: You're smiling. 
Fact 6: You're smiling or laughing again. 
Fact 7: You didn't notice I missed fact 5. 
Fact 8: You just checked it. 
Fact 9: You're smiling again.