When meat hits the heat, the sound it makes is a ...

I sit beneath a smiling face, most often seen in a formal place.

I standardly block your passage until you choose a path, Where three or more choices can lead to peace or wrath. I am the place where two journeys collide, And the legendary spot where the devil did bide.

In a collective, I'm bunnies under your bed, Everyone turns to me when they are dead, I'm dander, I'm fluff, I'm cells that are shed, If I'm not on your stuff I'm in a hoover instead

I have a head, but I have no brain,I have a heart, but it feels no pain.I can be an iceberg, but I sink no ship. You dress me, toss me, before I even touch your lips.