Answer:
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
Has feathers but can't fly. Rests on legs but can't walk.
What goes in, but never through? I've got some and so do you. We might lend one, or even two, but only if our trust is true.
A house with two occupants, sometimes one, rarely three. Break the walls, eat the boarders, then throw away me.
What is so fragile that saying its name breaks it?