My Grandmother has Worms

I think I have talked about school field trips on the bus before, but to refresh your memory, Portland schools do not have yellow buses, so kids take public transit to school and on field trips. Every so often, 20 or so kids will get on the bus at around 36th street and ride downtown to a museum, the library, or wherever. Usually it is not too big of a deal, but if the bus is full it can be a tight squeeze. This morning was one of those days. One of the teachers was sitting next to me and a couple of kids were in front of us sharing the seat with an older lady. The teacher kept asking the kids questions about where they lived and what high school they would be going to. This led one of the girls to start talking about her grandma:

Girl: They put my grandma in a home, she things she's sick.
Teacher: What's wrong with her?
Girl: She's a hypochondriac.
Teacher: How do you know she's not sick?
Girl: She says she has worms.
Old Lady: People can have worms.
Teacher: When I was a kid growing up in the south we wore shoes so we wouldn't get worms in our feet.
Girl: What?
Old Lady: They cut people open all the time and find worms.
Girl: What?
Old Lady: She probably really has worms and they are driving her crazy. You need to help her.