How many of these beaded safety pins did you have on your shoe laces? I remember this being a sign of popularity. Because you made them and gave them to people you considered friends, the more you had, the more popular you probably were.
Dip a cotton ball into the lemon juice and baking soda solution and apply it to your teeth. Let the lemon and baking soda solution sit on your teeth for around a minute. Brush your teeth to remove the acid. I saw results the first time I tried this.