Kush is pretty much a set of strains that are derived from strains that originated in the Hindu Kush mountains. There is a strain called Hindu Kush. Also, they are found a lot in hash-making countries. They're pure indica strains, except for the hybrids which are crosses that contain Kush genetics. But I've noticed that in some places "Kush" is just slang for "good weed." It is good weed if grown under optimum conditions. I'm sure you did get stoned pretty fast :thumbsup:. Gotta love those indicas.