Thinking about the answers

Why the sun lightens our hair, but darkens our skin?
Because our skin contains melanin (黑色素),which will come out absorb the UV rays from sun and darken your skin,and hair doesn't.　　

Why women can't put on mascara with their mouth closed?
Just to catch some attention,  otherwise, man will look somewhere else.

Why is "abbreviated" such a long word?
Because it hasn't been abbreviated yet.　　

Why is it that doctors call what they do "practice"?
Doctors are no perfect either, they have to practice to get better.

Why is it that to stop Windows 98, you have to click on "Start"?
Every action requires a new start.

Why is lemon juice made with artificial flavor, and dishwashing liquid made with real lemons?
To reduce cost. The part used in soap is the cheaper rind(果皮), and the part in lemon juice is the more expensive one.

Why is the man who invests all your money called a broker?
They might cause you go broker.(更穷)

Why is the time of day with the slowest traffic called rush hour?
Cause everyone is rushing home, tons of cars on the road at once, you end up not just slow but stuck there forever.

Why isn't there mouse-flavored cat food?
Perhaps all the cat food taste just like mouse, willing to try?

When dog food is new and improved tasting, who tests it?
Of cause dogs will try, just for the sake of their on kind.

Why didn't Noah swat those two mosquitoes?
Sorry, no idea.

Why do they sterilize the needle for lethal injections?
That is the last chance for them to get a "clean" record.

You know that indestructible black box that is used on airplanes? Why don't they make the whole plane out of that stuff?
In that case, no one will appreciate the sky-high air-fare, just for the cost itself, not mention the fuel price yet.

Why don't sheep shrink when it rains?
Sheep wool is covered in lanolin (羊毛脂)which is kind of greasy, water doesn't penetrate(渗透) it.

Why are they called apartments when they are all stuck together?
Don't really care anymore, lived in an apartment for a while, and broke the lease because I said "Yes"---big deal.

If con is the opposite of pro, is Congress the opposite of progress?
Too political, don't wanna get in there.

If flying is so safe, why do they call the airport the terminal?
You are terminated from being landing. Before you get on a cruise ship, you will see terminal as well.