1. proper noun. Celebrated equal rights activist.
2. noun. archaic. Colloquial term for the unpopular Cadbury chocolate bar 'Dream'. Came into use in the first half of 2011, upon dipping into a box of Favourites (assorted chocolates) and removing the unpopular sweet 'Dream', it was announced "I have a dream". Ironically, the Dream is a white minority chocolate amongst the oppressive darker chocolates that maintain authority amongst the selection. Fell into disuse shortly after.
note: often abbreviated to simply "Martin Luther", although this has led to considerable confusion, as Martin Luther is the slang term for the discontinued "Pollywaffle" chocolate bar, which achieved a cult following in the late 1980s.
Duff: "Lewis, any decent sweets left in the box?"
Lewis: "Only a couple of Martin Luthers mate"
Duff: " I thought they went out of production years ago..."
Lewis: "Sorry, Martin Luther Kings"
Duff: "Forget it"