Fun Riddles

Question: What starts with the letter "t", is filled with "t" and ends in "t"?

Question: Without fingers, I point,
without arms, I strike,
without feet, I run.

What am I?

Question: Smell me, buy me, and deliver me.
I won't change.

What am I?

Question: I'm teary-eyed but never cry.
Silver-tongued, but never lie.
Double-winged, but never fly.
Air-cooled, but never dry.

What am I?

Question: When you do not know what I am, then I am something. But when you know what I am, then I am nothing. What am I?