Well since you live in amsterdam, telling you to get layed, get wasted or get high would be like saying have a normal day.
So for now all I have to say is happy birthday.
May your dream of being an exceptional game developer come true.
Make sure you have fun creating one or two.
Have a great 21 man. Enjoy it, it only comes once.
Live long and prosper, and may your future be bright.
But for now enjoy this night.