Annie, Laura,
I think you guys are reading waay too much into this. I didn't take it at all as American's being stupid. If anything we're very arrogant, but I won't get into that here or ever, for that matter.
Sometimes when Lois is worked up, face it, she lack a little common sense. More than likely, she's so worked up over something that's obviously a waste of time, according to her, that she doesn't remember or realize what she should know.
I think it's being a little silly to be offended by something that is meant to be a fun romp ... and please don't be offended by my saying that.
There's a reason why I don't post too often, never know how it's going to be taken.