Answer:
u always follow me but I am rarely seen
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
Roast, boast, coast, post. What do you put in a toaster?
What two things can you never eat for breakfast?
I run around the streets all day. Under the bed or by the door I sit at night never alone. my tongue hangs out waiting to be fed during the day.
No matter how little or how much you use me, you change me every month.