Banjo, if serious, I think one, you do some research, and two, you get a sense of humour. Let me explain. Junior Morias is black, well built and very sturdy looking. A Black Mariah was a police van used to carry undesirables to and from prisons/courts, which was well built and sturdy looking. Do you see the connection in both words and appearances, no racism there.
Junior Morias is relatively small for a footballer too, and is black, some black people are very good at limbo,(other coloured people can also be good at this too) so could be amusing to think of him limbo-ing under a door, oh the times I wish I could have done that lol.
BJPIE, yes sorry, I forgot to have my humour gene removed.