Before it was "Happy Days," one of the most ubiquitous sitcoms of the '70s was almost called "Cool." Series creator Garry Marshall, who died in 2016, once revealed as much in a retrospective with The Guardian, where he also shared the strange reason the title didn't work out.

Some of the problems with the proposed name are obvious; if audiences are told something is cool before they even see it, won't that make it uncool? Even though Henry Winkler's leather-jacket-clad scene-stealer The Fonz was eventually seen as the epitome of cool for a whole generation of viewers, I imagine that pitching the sweet, cheesy series as "Cool" from day one could have backfired. It might have come across as trying too hard or, well, jumping the shark.

According to Marshall, though, the problem with the title had nothing to do with its implications and everything to do with period-specific branding.