I'm an American singing in an all German acapella jazz group that sings in English. We are singing Java Jive and even I have trouble explaining the slang. what is "I'll cut a rug 'til I'm snug in a jug."? I think that cut a rug is to dance, but I thought snug in a jug referred to being tipsy. and also, what is, "A slice of onion on a raw one."? A raw what and what does it have to do with coffee??