Lockless: Get grounded for leaving home without locking the front door or locking the dogs in their kennel.
Wait What: Get ungrounded four days early
STRONGWHOOPS: Break part of a door while casually opening it despite being a rather unathletic person. (This happened quite a while ago)
Ich bin ein Dummkopf: Forget the most recent thing you learned in German class, while remembering everything that came before it.