comic-sans

One good thing about comic sans is that if a super intelligent alien life form came to earth to gauge where we are at as a civilization and the first thing they saw was a poster with comic sans font they would immediately assume we are not a sufficiently advanced species to pose a threat and they would leave us alone.

If they saw Helvetica however they would probably try to take over earth immediately for it would be clear that humans are an iconic species with upside potential never before seen in the history of the universe.