[shotgun]

What cities can you go to and pick up multiple new flags in a relatively short amount of time? For this, the place has to present you with two things:

- high number of expat women (or exchange students) and/or high influx of tourists

- nightlife that is good for the average player (good ratios, ease of access), that can lead to multiple ONSs. Edit: either that or the popularity of online apps like OKC and Tinder.

I'll start:

New York
Las Vegas
Barcelona
Ibiza (in summer)

What else?