I am like a sink full of soapy water.
Bubbly, happy, and clean...

On the outside, at least.

Dip your hand in, you'll find that I'm still
Warm, relatively clean until...

You slice your hand on the knife hidden just underneath those shiny bubbles

I'm sorry if I hurt you,

But you shouldn't stick your hand into soapy water

If you aren't prepared to deal with the damage