Homeschool lessons on suction
Lesson One: If you take a cup and stick it over your chin and suck all of the air out of it, it will in fact, make a hickey on your chin.
Lesson Two: If your big sister is sitting there watching you do it, she won't tell you that's a bad idea until it's too late. Some big sisters are like that and you have one of them.
Lesson Three: You will only agree to let your mom blog about this if she promises to not use your name.
Lesson Four: Most likely, people are going to be able to look at the chin and figure out who did it and mom knew this when she agreed to the terms of lesson three. Some moms are like that and again, bummer for you, but you have one of them. But you probably already knew that.