Ask Dr Science!

The following questions were collected by University of Portland professor Terry Favero, who began his human-biology course each week by accepting anonymous "Ask Doctor Science!" written questions from his students. Some examples:

Are boobs just mostly fat?
Can men be affected by a menstrual cycle?
Can the stomach actually explode?
Can you be addicted to soda pop?
Can you die from getting your nose pushed back into your brain?
Can you get someone else's DNA from a bone-marrow transplant?
Do blind people see in their dreams?
Do fetuses burp?
How can you make a hickey heal faster?
How come I look like my grandmother?
How do those thigh creams work?
If someone drank a bottle of Liquid-Plumr what part of the body would dissolve first?
If you accidentally swallow tobacco can you get a cancerous growth in your stomach?
If you chew on candy and then spit it out do you still get calories?
If you cut off your ears could you still hear?
If you lost one ovary but the other one was healthy, would you only ovulate and menstruate every other month?
If you stand on your head for three days will your head explode?
Is a beer belly really caused by beer?
Is deja vu a brain function?
Is it true that if you swallow tobacco you will kill the parasites in your stomach?
Is there any prevention from growing those ugly ear hairs like my dad has?
What is the purpose of lips?
When a kidney is removed, what happens to the empty space?
Why are boogers green when you are sick?
Why are college students so preoccupied with sex?
Why are zits different colors?Why do babies drool?
Why do some people laugh louder than others?
Why do tattoos fade to blue?
Why do we get dark circles under out eyes when we are tired?
Why do we have earwax?
Why do you get all pruney when you stay in the tub too long?
Why does the hair on my legs grow unevenly?
Why don't men shave their underarm hair?
Why when I'm nervous around a cute guy does my head get such a rush that I feel faint and seriously find it difficult to think straight?
Why when you laugh sometimes does the back of your head hurt?