Besides describing hair, rope, and sex, "kinky" can also be used as a general word for acknowledging something someone has said as being
interesting,
neat,
cool,
awesome,
groovy,
gnarly,
sweet, etc.
It can also be used to mean
okay, in the sense that you are agreeing with someone.
It should always be said in monotone, even if you're excited. It should also be pronounced as fast as possible.