Old Tom bombadil is a...?!?!

[dancing spawn of ungoliant]

Oh, how wrong you all can be! It is rather clear that Tom Bombadil is a lively Ent in disguise. And this is what lead me to that conclusion.

An Ent isn't a regular human-like being so he can't be affected by the ring.

Ents, as we know, are "tree-like people whose purpose was to protect the forests of Middle-earth." (Encyclopedia of Arda) What else is Tom Bombadil doing than prancing around his lands and maintaining public order?

Bombadil fusses about nature all the time and he is able to talk to trees and command them.

"Tom Bombadil came trotting round the corner of the house, waving his arms as if he was warding off the rain." (FotR, In the house of Tom Bombadil) This is natural. Air pressures have a tendency to level down wich causes wind (from high pressure to low pressure). Wind makes clouds and treetops move. Do the math.

He wears colourful and distinctive clothes to draw attention away from his features which would of course give away the fact that he is an ent.

"In his own house, rather than a hat, he wore a crown of autumn leaves." (EoA) Well, duh! He is a tree. Of course there are leaves on his head.

Tom Bombadil is an ent.

Quod erat domonstrandum.