[archi42]

The 555 is a common trope in US movies and TV shows[0]. I always thought those are non-assignable in the US (obviously I was wrong), but it's fair to assume this trope to be well known.

If you didn't know that, you're one of today's lucky 10000 :)

[0] https://tvtropes.org/pmwiki/pmwiki.php/Main/FiveFiveFive

[1] https://xkcd.com/1053/