A saleswoman is driving toward home in Northern Arizona when she sees a Navajo woman hitchhiking. Because the trip had been long and quiet, she stops the car and the Navajo woman climbs in. During their small talk, the Navajo woman glances surreptitiously at a brown bag on the front seat between them.
"If you're wondering what's in the bag," offered the saleswoman, "It's a bottle of wine. I got it for my husband."
The Navajo woman is silent for a while, nods several times and says..."good trade."