[The Penguin]

The entire pubic area is a smorgasbord of bacteria and fecal matter, that's why...

[Donnah]

Taste like really nice spinach.

In spring I'll wash my hands and pick some.  []

[CliffordK]

As far as men.
Very few men piddle on their hands.
But, they will handle their Willy...  which isn't sterile.

Not that anything on the body is sterile, but there is a class of diseases that hang out around people's privates.

It is also not a bad idea to wash one's hands a few times a day.  Like checking one's oil at the gas station.  One could do it other times, but it is a convenient place to check the oil.