Two high-school age girls are chatting in the seat facing the back door. The conversation is lighthearted, until one of the girls casually checks the ingredients of the “juice” concoction she is drinking.

Girl 1, staring at the bottle: “Skim milk? What’s skim milk?”

Girl 2: I don’t know. “Maybe it’s like soy milk. I can drink soy milk.”

They discuss for a few minutes but neither seems to know for sure. Girl 1 starts to become agitated. Both start looking around for someone to ask and finally tap a boy about their age, who is listening to his headphones.

Girl 2: “Excuse me, do you know what ‘skim milk’ is?”

The boy looks at them blankly. Since I’ve been eavesdropping (per usual), I butt in.

“It’s milk without fat in it.”

Girl 1: “Does it come from a cow?”

I confirm.

Girl 2, giggling: “You’re going to Hell.”