Answer:
Roast, boast, coast, post. What do you put in a toaster?
Without me everyone would lose their head.
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down but should not be forgotten.
You get embarrassed when you stand on me when everybody is watching. Women don't like to talk about the number they see on me. Everyone stands on me when nobody is around
I ask no questions, but receive a lot of answers. What am I?
I am owned by Old McDonald.