I vow I thought you, at first sight

I vow I thought you, at first sight,
A moppet, a baboon, a fright,
Or some hobgoblin of the night,
That guilty creatures waken;
With nose and chin like ram's horns curl'd,
And brows in furrowed wrinkles furl'd,
Well 'tis amazing in this world
How one may be mistaken.

For now I see with half an eye
You are not old, nor made awry,
Nor do your shambling trotters ply,
As if by palsy shaken:
You're young as Ganemede and fair,
Narcissus had not such an air,
Well 'tis amazing I declare
How one may be mistaken.