People using "Americanisms"

[Taunton Blue Genie]

Where did the use of ‘sick’ as being used to describe something as being great come from? Did it hail from some Germanic/French word? My American and Canadian colleagues use it every day... and now my kids do too ... Bloody Germans!!!

The work 'sick' does come to us from the Germanic root. In fact, the Dutch name for a hospital is 'Ziekenhuis', a house for the sick, as it were.
As for the usage of the word 'sick' in a positive sense I would imagine that it's a 'street thing' and incorporates the same playful irony as when some people use the word 'bad' as meaning good. It's more to do with slang than Schleswig-Holstein methinks.