Ice cream sold by strange men in the back of a van.
Emily couldn't resist the Danger Cream.
Delicious forbidden ice-cream sold by strange men in the back of white vans possibly made with elicit substances.
Bro: "Got an ice-cream the other day, sold by a man in a white van, it was delicious."
Me: "Ahhh yes, one of those Danger Creams, can't trust all those vans you know, never know what its made out of"