For not only is it a pain to spell, the word stands for something far more sinister: it's the name of a 'monstrous entity' in a short story by a writer called H.P. Lovecraft!
Announcing his daughter's birth earlier this month on Facebook, he wrote: "All bow down to the great and powerful Cthulhu."
But he later revealed the truth.
The dad made the strange naming request when his wife was three months pregnant.
Writing on the website namemydaughter.com, he said: "Hi, My name is Stephen and much to the disbelief of my wife, I have decided to let the internet name my daughter."
More than 150,000 votes were cast and they were also given the opportunity to give the girl her middle name, too – although the parents decided against the top middle moniker pick of All-Spark.
Instead, they gave Amelia the two middle names: Savannah Joy.
According to Global News, other top 10 middle name picks were Of-The-Sea, Le-Dash-A, Salad and Pond. Not that any of those choices really had a chance to begin with, as Stephen made clear in his announcement of the naming contest.
He wrote: "Unfortunately internet I know better than to trust you. We will ultimately be making the final decision, Alas my daughter shall not be named WackyTaco692. Sorry guys the wife wouldn't go for a free for all."
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