Riddle: I am free yet priceless, you can't own me but you can use me, you can't keep me but you can spend me. Once you lost me you can never have me back. What am I?
Riddle: There was a fat man. He was being chased by zombies. The only way to get away was to cross a rope bridge. The rope bridge could only carry 80kg and the man was 79kg. The fat man had 2 things he needed to carry. Each weighed 1kg. How was he going to get across?