It is something so fly that its tight.
Your K-Swiss are flite!
quite simply, this is pigeon shit.
cleverly combining 'to fly' (what pigeons do) with shite(also what pigeons do).
This originated in Northern England approx 1996 when pigeon faeces found their way into the water supply of a popular school, causing health and safety issues to be raised.
"ewww, you just drank a glass of that water - look at the bits in it, man, it's full of flite!"