Couples of Reddit, what's the dumbest 'house rule' you and your partner made as a joke but now both of you are low-key aggressively serious about enforcing?

https://www.reddit.com/r/AskReddit/comments/1qeojuj/couples_of_reddit_whats_the_dumbest_house_rule/

This is by far the best comments section I've ever read (for hours) on Reddit. Funny stuff, strange rules, great ideas, and really sweet, wholesome things.