If you say it all day, every day, then your 5 year old will go to school and use it. On the other hand, if it slips out when you hit your thumb with a hammer (

If you say it all day, every day, then your 5 year old will go to school and use it. On the other hand, if it slips out when you hit your thumb with a hammer (assuming you're not a very uncoordinated career carpenter) then your 5 year old will know that it must have hurt like the dickens, but that it's not a word for every day use.