Sixteen tons and what do you get?
Another day older and deeper in debt.
Saint Peter, don’t you call me, ‘cause I can’t go;
I owe my soul to the company store.

If you see me coming, better step aside.
A lot of men didn’t and a lot of men died.
One fist of iron, the other of steel.
If the right one don’t get you, then the left one will.

16 is a square of a square (4). The 4th power of 2.

16 ounces in a pound.

16 is the base of the hexadecimal system: I’ll spare you the description.

In this state (most states?), 16 is the minimum age to get a driver’s license; in Australia, a beginning learner’s permit.

The age of consent is generally 16 in the eastern half of the U.S., and 18 for the western half. It is the minimum age at which a person is considered to be capable of legally giving informed consent to a contract or behavior regulated by law. I wonder what scientific physical/psychological bases these ages are based on. I know that I could not leave the state of Connecticut without my parent’s consent until I was 16. But when I arrived in California, I was once again a minor requiring parental consent for any contract, even though I was on my own and supporting myself (two jobs and going to college full time).

For my social group, coming of age was 16 (sweet sixteen). I was a senior in high school. That year, I had appendicitis, kissed a boy for the first time, got my driver’s license, graduated from high school, left Connecticut to move to California, and became financially independent. It was a year balanced on a knife's edge.

Do you remember when a 16-bit processor ran 16-bit applications?

The M16 rifle and the F-16 Fighting Falcon fighter jet.

Was it Tennessee Ernie Ford who sang "Sixteen Tons"? There's enough testosterone in that song to power an army.