13 - this is when life starts to really get fun. But you only get 5 years to enjoy it.
Don't get caught.
Be honest. These will be the hardest years of your life to be honest. You will have a lot of temptations to overcome.
Don't do anything stupid enough that if you get caught it will stay with you for the rest of your life.
Don't do anything that will harm anyone for the rest of their life - giving someone a wedgie only last's for an hour... (don't get caught..)
Always treat her like a lady.
Always respect your parents.
Pay attention in school, these are the years that actually are going to begin making a difference in your life. After your 5 years of enjoyment, we can tell whether you did or not.
Be responsible, and take initiative.
Enjoy your next years - before you know it, they will be a long lost memory.
Have a good B-day.