related to the scottich colloquialism 'ken' meaning 'know' "ken what i mean?"
kenn with the double n can be used as an expletive
or an exclamation, when stubbing toe "that hurts, kenn"
most significantly, "kenn" is used as an expression of joy upon hearing key alt-rock choons, esp. in the central belt of Scotland.
upon hearing a mighty guitar riff/bass solo/drum freakout:
"fucking kenn/totally kenn etc"