It first started when the gang were part of an intervention to help their friend Stuart quit drinking. Afterwards, they felt so good about helping Stuart that they created the banner and held another intervention; this time for Marshall, to convince him to take off the hat he had been wearing for two weeks. This went on for a while, with each member of the gang having interventions for small things they didn't like about one another, until Barney accidentally burned the banner performing one of his fire magic tricks. (Intervention)