Puzzles/Non-scientific puzzles/Boy and Girl

From Wikibooks, open books for an open world
< Puzzles‎ | Non-scientific puzzles
Jump to: navigation, search

Puzzles | Non-Scientific Puzzles | Boy and Girl

A boy and a girl are talking.

"I am a boy" - said the child with black hair.
"I am a girl" - said the child with white hair.

At least one of them lied. Who is the boy and who is the girl?