They don't. Bird and bee mating is a result of chance and not skill.
Why are subways noisy?
So people don't have to be bothered with dull conversation.
Why are snowmen so hard to build?
To limit their numbers, because there aren't enough magical hats to go around.
Why do cats stare over your shoulder like they see something lurking there that you can't see?
Why did you look into a cat's eyes, on the first place..... They hate it more than anything.
Is a monkey drawing a picture, an ancestor of Picasso?
No , look again. He's really Picasso.
Why is the earth so small?
It's a matter of size. Are you being sizist?
Why have I no driving ambition?
Coz u don't know driving.
Why do I wear underpants ?
Can't imagine.
Why am I not wearing them at this moment?
It's wash day.
Is it possible to have the inmates running the asylum?
Better inmates than outmates.
How many roads must a man walk down?
It really depends on how hard the wind is blowing.
What makes a "summer wind" a "summer wind"?
If it's moving air, and in summer.
Why has an elephant got wrinkly skin?
The iron's cord can't reach that far.
Do elephants forget?
I don't remember.
Do octopuses keep 8 cats as pets?
Not unless their leases allow small animals.
Isn't the correct plural of octopus, octopodes?
No, it's octopussies.
Why can't you get a good stink bomb any more?
Because they all stink.
What is love ?
Love is never having to say you're sorry.
Isn't that the most puke-making line ever written?
Yes.
Since we keep finding Waldo, why aren't there any Where's Jimmy Hoffa? books?
Because contributions to mob related activity is frowned upon.
If I put a bell on a string will it play a nice tune?