We had a girl in HS home ec named Ellen who did it at least once a year. At class reunions we still tease her about it. The first week or so of class we would hear a blood curdling scream and it would be Ellen. Our teacher who was a spinster crab apple, we thought, once asked her if maybe sewing wasn't a good fit for her. I got to know the teacher later after graduation and really appreciated her dry sense of humor and skills. Her sweetheart was killed in WWII and she never married.