Women.

I found this to be really funny..

Whatever you give a woman, she will make greater.
If you give her sperm, she'll make a baby.
If you give her a house, she'll make it a home.
If you give her groceries, she'll give you a meal.
If you give her a smile, she'll give you her heart.
She multiplies and enlarges whatever is given to her.

So, if you give her any crap, be ready to receive a ton of SHIT!