A teenage girl gave birth to illegitimate identical twins and put them
up for adoption. One was adopted by a Mexican couple and named Juan. The
other by an Egyptian couple and named Amal.
Several years later, the girl was a happily-married middle-age woman
with kids and a husband of her own. She longed to find out about her
twins. Finally the adoption agency sent her a picture of Juan. She said
to her husband: "If only I knew something about the other one too."
"What for?" he replied, "They're identical twins. You've seen Juan,
you've seen Amal."