Things that I have learned recently by hanging out with non-Americans:

It's really fun watching non-English speakers improve in their skills over fairly short periods of time. After just one month of living in a non-English-speaking country where English is yet spoken widely and the one main cross-national language here, a person who has minimal English skills can really come to be quite proficient in social communication.

Watching said person and another from the same country who has been here for four months already and was already very proficient when the latter person arrived can be interesting, too. As they talk with me (with English as our only common language), the longer-term person will understand what I said and translate for the first one moment, and it will be the other way around the next moment. These translations can turn into entire conversations since translations aren't always easy. They also converse in their own language to work out jokes in English, which I think is my favorite part.

It's even easier to be "one of the guys" if I'm the only one who doesn't speak the common language of a group, so that they can have all their guy jokes in their language, and regular conversation in English, so it works out even better than hanging out with American guys.... plus they have pretty accents.

And, finally, the most important lesson:

Chuck Norris jokes are universal.