What Am I Riddles

Question:

Sad, sick, or sloppy I'll help you out,
Use me right and I'll cover your snout.

What am I?

Question: You are my brother, but I am not your brother. Who am I?

Question: Hold me by the neck and I won't mind,
if I get wrong I just need a good wind.
If you want me you better pick wisely,
just use your ears and I'll follow you blindly.

What am I?

Question: Drop me and the world will shatter,
and you can always find me where you empty your bladder.

What am I?

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

What is it?