Answer:
Tuesday, Sam and Peter went to a restaurant. After eating lunch, they paid the bill. Sam and Peter did not pay. Who did?
I am free the first time and the second time, but the third time is going to cost you money. What am I?
I have every color but no gold.
I am lighter than air but a hundred people cannot lift me. Careful! I am fragile!
Taken from a mine and then locked up in a wooden case. I am used by students everyday.
When someone uses this acronym, you know you've got to pick up the pace