Answer:
Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through. My see through clothes. Used up am I - I've gone to pot.
Only two backbones and thousands of ribs.
What is it that no man ever yet did see, which never was, but always is to be?
Men have one, women two, and when they become family, itโs three. What is it?
Blend a teapot shot so the pearlies wonโt rot!
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?