Relaxing yet moving continuously, swaying like a ship yet never tipping.
I can be white, soft, or large. My cousin might play tennis, and my brother might be safe. What am I?
I work best when I am broken; I shine in many colors, but can only lend you one. You can trust me only once, and then I'll retire.
An illness that is more severe when you are far away from the cause.
Popping me and celebrating, but saying my name and suffering a lie.