Answer:
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
I have a strong affection for belly buttons.
I have cities with no people, forests with no trees, and oceans with no water. What am I?
In buckles or lace, I help set the pace. The farther you go, the thinner I grow. What am I?
The answer I give is yes, but what I mean is no. What was the question?