Riddle: A feathered Biped in the terminal part of the arm equals in value a pair of feathered bipeds in densely branched shrubbery. What is the proverb?
Answer: A bird in the hand is worth two in the bush.
Riddle: A boy is five feet tall and records his height by hammering a nail in a tree and carving his hame. Five years later he returns to the same tree and finds that it has grown on average 16 inches per year.
How high now, is the nail from the ground?
Answer: It is still five feet tall because only the top of the tree grows. The trunk only gets bigger by circumference.