Freezing rules is a paper note in Fallout 76, introduced in the Skyline Valley update.
Location[]
Can be found in the Vault 63 organics sector, on a blackboard in the Pharmaceuticals Research room in the Pharmaceuticals Wing.
Transcript[]
FOLLOW THE RULES
I am annoyed I even have to write this, but stop storing your dammed drinks in the freezer, this freezer is only for bacteria!