Riddle - "What Am I?"

[Old Moparz]

What am I?

I am a common object enjoyed by both sexes, normally about 8 inches long, with little hairs on one end, and a hole on the other.

For most of the day I am laying down, but I am ready for instant action.

When in use, I move back and forth and in 'n' out a warm, moist hole.

When the work is finally done, a white, slushy, sticky mush is left behind, and I return to my original position.

Cleaning is usually done after I am.

What am I?
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Why, I am your very own Toothbrush!

What were you thinking, you pervert?