Meet-and-greet the first few days at my college dorm nearly 20 years ago:

> Albino student: "Hey, where'd you get that watermelon?"

> Student with watermelon: "Dude, I'm black."

I think it was around then I first learned of the watermelon / friend chicken stereotype (I didn't get why everyone laughed when he said this), but "grape soda" is a new one to me.