Answer:
I am the yellow hem of the sea's blue skirt.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?
I can be cracked, I can be made. I can be told, I can be played.
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
If you break me, I do not stop working. If you touch me, I may be snared. If you lose me, nothing will matter.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?