tooth fairy

Reader's Digest 8月号の記事からの引用です。
Dental Parental Dilemma
I was playing tooth fairy when my daughter suddenly woke up. Spotting the money in my hand, she cried out, "I caught you!"
I froze, trying to think of an explanation for why I, rather than the tooth fairy, was depositing a gift under her pillow. I was let off the hook when my daughter interjected, "You put that money back! The tooth fariry left it for me!"
"tooth fariry" についての説明はWikipediaから引用します。
The tooth fairy is a fantasy figure of early childhood. The folklore states that when children lose one of their baby teeth, they should place it underneath their pillow and the tooth fairy will visit while they sleep, replacing the lost tooth with a small payment. The tradition of leaving a tooth under a pillow for the tooth fairy to collect is practiced in various countries in the Anglosphere.