
This old “Rules of the Mustard Club” poster is one of the smartest membership plays you’ll ever see. It turns a boring condiment into a secret society with rules, rituals, and even a password. You’re not just squeezing mustard on meat—you’re following a code. Let’s break down how these tiny rituals quietly transform casual users into proud members.
The poster lays out six playful “rules” for members: eat mustard on all proper occasions, take refuge in a mustard bath when tired or ill, make a secret sign at every meal by moving the mustard pot six inches from a neighbor’s plate, refuse sandwiches without mustard, insist on fresh mustard and never tip waiters who forget it, and train your children to eat mustard. At the bottom it seals the deal with a silly, memorable password: “Pass the Mustard, please.”
Peloton turns workouts into membership by giving riders branded rituals like the pre-class high-five, milestone shoutouts, and post-ride selfies with specific hashtags.
Starbucks turns coffee buyers into insiders by naming drink sizes, customizing orders with a shared lingo, and encouraging daily check-ins via the app.
Notion turns casual users into community members by encouraging them to share templates, duplicate each other’s pages, and participate in recurring weekly planning rituals.