What does every man have, some longer or shorter than others and they give it to their wife when they get married?

Note: This may not be appropriate for younger ages.

I saw a strange creature,
Long, hard, and straight,
Thrusting in a round, dark, opening,
Preparing to discharge its load of lives,
Puffing and squealing noises accompanied it,
Then a final screech as it slowed and stopped.

Note: This may not be appropriate for younger ages.

She awakes. I touch her and she moves her legs. We are both nervous but I continue. Finally the white liquid comes.

What happened?

I go in hard.
I come out soft.
You blow me hard.
What am I?

Note: This may not be appropriate for younger ages.