The write-ups above make me wonder if anyone of them has ever seen a whole, unpeeled, avocado.

The term "alligator pear" comes from the simple fact that the avocado is shaped like a pear, and its skin has a visual resemblance to that of an alligator.

Avocados have a tough outer skin, soft flesh and a large pit (or "stone"). The flesh of the avocado is very rich and high in fat. Its flavor is unique, and I have difficulty comparing it to something else.

The flesh is very smooth with a velvety texture, this makes it a popular ingredient in rolled sushi (maki), dips and as a condiment on sandwiches.
Yes, some avocados are smoothed skinned, but still have a somewhat mottled color (shades ranging from yellow to green) still resembling that of a alligator.