look up any word, like turnt:
 
1.
A Dr. Tu is:
1. NOT a medical doctor; has a doctorate degree in biology
2. A biology and vertebrate zoology teacher at Stuyvesant High School in New York City
3. A very nice woman
4. A teacher in which who's class you will fail
5. A teacher in which who's class you will wish you were dead
6. A teacher who's class makes you realize that you've been doing everything wrong and that your life is a failure and that you might as well just give up on anything and everything.
Dr. Tu's test was mad hard yo.
by YASFUCCITUP December 15, 2013
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