Good Riddles

Question: If a pirate was to join the military, what branch of the armed service would they probably go in to?

Question: It smells like blue paint,
pours like green paint,
and it looks like a red truck.

What is it?

Question: Enter one hole and leave three,
once you succeed I'm on thee?

What am I?

Question: I am in everything and in nothing, what am I?

Question:

Take me for a spin and I'll make you cool,
but use me when it's cool and you're a fool.

What am I?