https://www.youtube.com/watch?v=xrEG65XDvdE ( Sorry it's in arabic )
basically there was a dozen of unemployed Moroccan swimming in some random beach of Tangier ( the north of Morocco ~14km from Spain ), when the guardia civil came to the beach and proposed them to go to Spain freely, you can hear the " gracias" in the end !!!
what did they mean by this ?