@Glennn,
Q: Glenn - What is the real reason for yawning?
A: In nature, this 'wide open mouth' gesture is called 'gaping' and humans 'gape' to create the holes necessary for sayings such as 'he left a a gaping hole in my heart' and 'there was a gaping hole in his finances' etc
Q: Glenn - Why are some pillows better than others?
A: The 'better' pillows have had a 'better' upbringing... trips to the zoo, no birthday forgotten, gifts at Xmas and so on... the 'worse' pillows never stood a chance
Q: Why do doughnuts/donuts have only one hole... why not a series of holes?