"There I was, sitting on a beach in Bermuda, sipping a very alcoholic (but not too sugary) drink, when I get a text from one of my gumshoes telling me one of your pearly whites has escaped!!
"Bleeding marvellous!" the tongue-in-cheek dad continued.
He then explained that before he knew it, he was on a "boat, then a taxi, then a plane, followed by another taxi, a train, a replacement bus service, an Uber, a bicycle, a unicycle and a tractor (don't ask) - all to give you a measly two quid!"
The supposed 'tooth fairy' then punned on the fact that normally he makes a profit from dealing with teeth - that is "unless I get done for incisor trading," he wrote.
However, this time, the tooth fairy found himself "seriously out of pocket".
The father concluded his note to Scarlett by asking her to spend the money the tooth fairy gave her wisely, avoiding sweets and "sugary drinks."
He wrote: "If your other tooth comes out over half term do me a favour and give it back for a bit! Let me have the rest of my holiday!
"This is a stressful job - some days it's like pulling teeth!" he concluded.
Since the note was shared on Tuesday, it has been shared many times, with other parents commenting on how much they enjoyed reading it.
For many tired mums and dads, the candid letter has proven a welcome difference to stroppy children wanting cash.