You arrive in a new city, deposit your bags, and head downstairs to the hostel lounge to figure out what to do next. Unsurprisingly, the lobby is filled with young travelers looking to do exactly the same things you are: explore the city, experience the culture, get drunk.
You join up with a few of them heading out soon, all from a motley selection of countries with exciting accents. You hear about their itineraries, offer tips to those going the direction you came from, make fun of national stereotypes, and generally revel in meeting new people who line up with your current goals yet are different in so many tiny ways.