"I'm going to can." vs. "I'm going to Cannes."

I mentioned tonight, at our weekly dinner, that I was going to can on Friday. My Aunt was ecstatic upon hearing this news. I was dumbfounded. Why would she care that I had decided to put up tomatoes? After about 3 minutes of her excitement over my news of canning it was discovered that she thought I meant - "I'm going to Cannes." Funny, isn't it, that we all have a unique frame of reference?