To eliminate waste from the blood. The kidneys take nitrogenous wastes out of the blood and pull some water out as well to make urine, which then flows down the ureters and into the bladder, and when you're ready to go, from the bladder through the urethra and out of the body. If your kidneys didn't do this, you would die within a few days without dialysis, so it's an important function.
Its TO PEE
pee
yes there is toxins in your pee when you first pee.
it was called pee cause they like the word pee
Of course they pee. They pee when they poop. LOL
poke it 1000000000000000 times
do you love me or should i go pee-pee on you, Joerty Hertyolpe
You pee in a toilet though if ur crazy u could pee somewhere else
Where they are when they have to pee.
pee
Is pee
The go pee where they go pee