When you're banging a Koreatown tranny in the ass doggy style with her dick hanging down and both of your nut sacks are clapping together rhythmically like Newton's Cradle.
Scott heard a loud clappingsound coming from the top bunk of E40 so Jake turned the light on to see Trevor and Alexa doing the K-Town Cradle.
Good fucking attitude. Made popular and famous by the electronica band "Blood On The Dance Floor." Used when really happy or to tell others to get a gfa.