An example of what I mean:
I, in China, told an English speaking Chinese friend I needed to stop off in the bathroom to “take a shit.”
He looked appalled and after I asked why he had that look, he asked what I was going to do with someone’s shit.
I had not laughed so hard in a while, and it totally makes sense.
I explained it was an expression for pooping, and he comes back with, “wouldn’t that be giving a shit?”
I then got to explain that to give a shit means you care and I realized how fucked some of our expressions are.
What misunderstandings made you laugh?
A student was telling me about their pet dog, but it sounded like “duck.” I kept asking questions like, “how did you get a duck? Your parents bought you a duck?” They couldn’t tell the difference between what I was saying either. They showed me a picture and that cleared right up.