Answer:
What comes once in a minute, twice in a moment, but never in an hour?
Santa's favorite entrance for home invasion
I come in winter. I cannot see, hear, or feel. I can't eat, but you can eat parts of me.
What is black when it is clean and white when it is dirty?
Words come out of it, aligned in perfect silence. A messenger of black on white, a slinky fellow drawing lines, of thin and soft graphite
I have a few points but we're not competing. I'll help you win when you're eating. What am I?