A game played in middle school or high school were you have to shove your friend into a locker, the game is over once the first person to be shoved into a locker and the person who shoved wins; it's usually played with 2 people but can be more but over 4 people literally just be a gangbang of actual anarchy in the school halls.
Tom: Let's play lockers
Kyle: Sure!
Tom: Pushes Kyle
Kyle: Pushes Tom Tom: Shoves Kyle into a locker
Tom: I win!
Kyle: GG, I'll win next time!
Lockensmur means the day after tomorrow.
Two days into the future. If today is Wednesday, lockensmur would be Friday.
A. Are you going to the big party lockensmur?
B. Sadly, I won't be able to go because I have to go to my niece's birthday party lockensmur.
A. Oh, I wish you could come.
Y. They are opening the videogame store tomorrow, and all of the good games will probably be gone by lockensmur.
Z. Ugh, I won't be able to get a good game because I only get my allowance on lockensmur.