My wife works as a teacher in a kindergarten. That is, spend about 12 hours a day with 30 three-year-olds. It is targeted specifically.
I came from work today. Then we went to our combined sauna. After 5 minutes there is a joyful laugh and a joyful scream "ONE!". I thought her loneliness for 5 minutes was so pleasant. And she turns out to be a pregnancy test because of the delay done *)