My co-workers are from all over the world, and sometimes my conversations with them cause me to think about whether my actions/comments are culturally Chinese or American, and sometimes my conversations with them just make me laugh. 

One day for lunch I had a peanut butter and jelly sandwich.  My co-worker exclaims, "Why are you eating a breakfast food for lunch?  Peanut butter and jelly is only for breakfast!"  I had to find the nearest non-asian American and ask whether he had PB&J for lunch growing up, and he did, which confirmed it as an American custom.  I guess Europeans don't eat PB&J for lunch.  Another day I brought layered jello.  Apparently that's a Chinese American thing.

Sometimes it's just a language issue, which results in tons of hilarity. 

Like one time I asked my co-worker what he did over the weekend.  He said, "my wife and I bought a crib."  My response was, "you bought a house?!  That's great!"  He said, "no, we bought a crib for the baby.  Jenn, sometimes you are really strange."  Hahaha.  He's Swiss. 

Another time he asked me to do something for him, and I said, "No prob bob."  His response: "No, no...I do not go by Bob.  Only by Roberto."   "No, you don't understand, I say that to everyone."  "You call everyone Bob?!"

Today another co-worker (Vietnamese) brought a bunch of candy from home because she didn't want her son to eat all of it.  I dug through it and pulled one out exclaiming, "Yay!  I found a Fruit by the Foot!"  My Indian co-worker's response was, "That's disgusting!  Who would try to market that!  No one would eat anything made by a foot."  "No, it's the measurement foot.  A better translation would be Fruit by the Meter, because it's about a meter long."  Hahaha.