Do you mean tell the story?

So the black ambulance is an urban legend here in Czech republic and Slovakia (and in other european countries too I think). It got popular in the 1980s, when we were still socialist Czechoslovakia. It's supposed to be a black ambulance that rides around at night, kidnaps young people and kids, kills them and then sell their organs to the milionares in the West for transplantations.

It's obviously not real, but you never know... ;)