Kiwi book The Wonky Donkey has skyrocketed to the top of global Amazon book sales after its popularity was boosted thanks to a hilarious Scottish grandma.
Footage of grandma Janice Clark reading the book to her baby grandson, pausing frequently because she couldn't stop giggling, went viral gaining millions of views around the world.
Since then the book has been in hot demand, and it's just knocked veteran journalist Bob Woodward's book Fear: Trump in the White House out of the top spot on Amazon.
The Kiwi classic adds in a new adjective every few pages to the end of the sentence - the final sentence in the book being "spunky, hanky-panky, cranky, stinky, dinky, lanky, honky-tonky, winky, wonky donkey."
Ms Clark told Newshub she "lost the plot" reading the book, and was unaware she was being filmed.
After the video went viral, stocks in Australia and New Zealand sold out and Scholastic ordered another 40,000. It has since ordered an additional 50,000 of various Wonky Donkey editions for the Australasia market.
Before the video went viral the book was out of print in the UK and the US, and after a massive order from Amazon it is believed the an additional 150,000 copies have been printed in the US.