Being bookchecked is very unpleasant. It is when you are carrying books and someone randomly comes up to you and purposely slams them down to the ground. They usually do not help you pick the books up.
Elaine:*walks in the hallway,carrying 3 books and binders*
Justin:*pushes them down*
Elaine: Aw man!
Other student:*walks pass* Haha you got bookchecked!
Elaine: F you! *attempts to bookcheck other person*
Boocheckie is a term that can be used to replace more commonplace swears. It is unique as it can be used to replace ANY swear, unlike other words that can replace only one.