Good Riddles

Question: I'll bring out your bulls,
and slow your roll.
I may even come out of your skull.

What am I?

Question: Skinny I am fast,
fat I am slow,
but I'll still delight you from your eyes to your nose.

What am I?

Question: Everyday I stalk you all day long,
With every move you make, I never make one wrong.
I vanish twice a day with the sun's height and fall,
I will follow you anywhere,
even the bathroom stall.

What am I?

Question: When I am released to the wind,
you look away and you pretend,
but away your friends I will send.

What am I?

Question: If it's information you seek, come and see me.
If it's pairs of letters you need, I have consecutively three.

Who am I?