Boots Who Made the Princess Say, "That's A Story" or The Ash Lad who made the Princess Say, "You're A Liar" is a Norwegian fairy tale collected by Peter Christen Asbjørnsen and Jørgen Moe in Norske Folkeeventyr.[1]
It is Aarne-Thompson type 852.
A princess was a dreadful storyteller. The king said that anyone who got her to say "That's a lie" would marry her and get half the kingdom. After many had tried, three brothers did as well, and when it was the youngest son's turn, he traded stories with her: the princess claimed a farmyard too large for a man at one end to hear the horn blown at the end; the son that a just bred cow that cross their farmyard would give birth at the other side if she crossed, and on with more tall tales until the son claimed he had seen her father and his mother cobbling, and his mother boxed her father's ears.
"That's a story!" said the Princess; "my father never did any such thing in all his born days!"