Where did my 8 year-old learn the term "eco-goth"?

Got some new boots the other day and made the colossal mistake of asking Primo what he thought of them.

"Mom, you're SO eco-Goth!" he observed.

"I don't know what that means."

"It means you're EMO and you look like you belong on a beet farm."

"Is that good or bad?"

"You look like a demented soldier ballerina!"

"Now you're just making stuff up."

"Oh, Mom," he smiled, slinging his arm around me, "I'm just kidding, you look great!"

Why I didn't learn my lesson after our shopping trip for skinny jeans, I don't know.