“A boy and a girl were insanely in love with each other,” my mother’s voice was saying. “They decided to become engaged. And that’s when presents are always exchanged.
“The boy was poor–his only worthwhile possesion was a watch he’d inherited from his grandfather. Thinking about his sweetheart’s lovely hair, he decided to sell the watch in order to buy her a silver barrette.
“The girl had no money herself to buy him a present. She went to the shop of the most successful merchant in the town and sold him her hair. With the money, she bought a gold watchband for her lover.
“When they met on the day of the engagement party, she gave him the wristband for a watch he had sold, and he gave her the barrette for the hair she no longer had.”
source : book of “By The River Piedra I Sat Down And Wept” by Paulo Coelho