You know you're Parisian when...

I've clearly been in Paris for a while, because today I was on my way from Pigalle to Bastille, taking the 12 line, and I decided to take 8 line instead of the 1 line to connect to Bastille, despite being roughly the same number of stops, because the 8 platform at Bastille is closer to the north-east exit of rue de la Roquette.

When you have memorized the layout of the subterranean warrens that are the main métro stations here, you've clearly been here for a while.