What is the center of gravity?

What kind of which lives on the beach?

What flowers grow under your nose?

What is always coming, but never arrives?

Why was 6 afraid of 7?　

What has a head and a tail, but no body?

Some months have 31 days, others have 30 days, but how many have 28 days?

What starts with T, ends with T, and is full of T?

If you say it you break it. What is it?　

What is it that goes up, but never comes down?

What can you catch but not throw?