Got milk?

Last night I had a dream I was back on the farm in Bertha, visiting Liz. Everyone was running around trying to finish getting supper ready for the 15 or so people who had showed up for a Sunday meal together. "Grab the milk, will ya Cal?" Someone paused long enough to shout at me so I started to look for the milk. It wasn't in the fridge or in the pantry or in the cooler on the porch. No milk anywhere. So, I hopped in my car, drove into town and tried to buy some at the grocery store only they didn't have any either. Logically, I bought some goldfish crackers instead.
By the time I got back to the farm everyone was sitting down to eat, waiting for me. "Where in the world have you been?"
"You were out of milk so I went into town to get some but I couldn't find it there, either. I'm sorry." Everyone looked at me in silence.
"Sweetie," Liz's mom said, "this is a dairy farm." After one more beat of dead quiet everyone started laughing.
Only I would go to the store to buy milk in the middle of a dairy farm. Don't hold it against me? (It was just a dream...)