Day 7--Book that makes me laugh.
This one is pretty self-explanatory. Hitchhiker is completely hilarious absurdity.
"So this is it," said Arthur, "We are going to die."
"Yes," said Ford, "except... no! Wait a minute!" He suddenly lunged across the chamber at something behind Arthur's line of vision. "What's this switch?" he cried.
"What? Where?" cried Arthur, twisting round.
"No, I was only fooling," said Ford, "we are going to die after all.”
It also answers the oft elusive question of life.