生日快乐祝福语是在生日这个特殊的日子里，表达我们对于生日人的祝福和关爱的一种方式。简洁的祝福语可以更加直接地表达我们的心意。下面是一些英文简短的生日快乐祝福语：

1. Happy birthday! May all your dreams come true!

2. Wishing you a very happy birthday and a year filled with happiness and success.

3. May your birthday be as special as you are. Happy birthday!

4. A very happy birthday to you! May this year bring you lots of joy and laughter.

5. Wishing you a wonderful birthday filled with love, laughter, and lots of cake!

6. Happy birthday to the most amazing person I know. Have a great day!

7. May your birthday be filled with sunshine, smiles, and lots of love. Happy birthday!

生日快乐祝福语可以通过短信、微信、电话、贺卡等多种方式进行传递，让生日人感受到我们的祝福和关爱。无论是怎样的方式，最重要的是真心祝福，用心传递，让生日人感受到我们的真诚和温暖。