Back when I was a boy, we used to read Asterix and Obelix, about two Gallians, one tiny and one huge and super-strong, who fought the Romans. Obelix always used to call out: "Weird guys, these Romans", but wait till you get a load of this: apart from their preference for cartoons about way too young school girls, this apparently is what Japanese TV viewers consider "Humor":
And if you figured that was weird and in any way not to your liking, then maybe you are not ready to meet any aliens yet: Their customs might go far beyond the only superficially different customs of our Japanese friends. One last tip: if your Japanese business partner invites you to dinner with his family, please have the courtesy not to show up with any yellow flowers. They do not express any sentiment that might be useful in your further business dealings…..