I know this thread should just be a funny thread and it shouldn't be taken too critically but janky is not a "black people word". As a human with a HUGE interest in slang and dialect I just had to get that out there. its all love though
boo boo and reffering to your signifigant other as boo is an interesting use of words, mollywhopped been around a long time to my knowledge, I think I heard that in old movies and shit, I think heard my grandmother say it before. lol.
All types of americans have been saying janky/jinky since the fifties. I think it came from the term junky in reference to an old broken down automobile.