Working in a UK prison recently with young (white) lads, mainly from the UK Midlands, I came across "crib" as in "home" ("I was going to my crib when I saw him"). Most intriguingly, there was also "Yam" meaning "eat" or "bite" ... "My dog would yam him", "I wondered if there was anything to yam".

Both words used enough over two days for me to be sure of the meaning, but both words very new to me in this context!

Anne