After a lull in the conversation and laughter, I looked around the room. It had just gotten too damn quiet amongst the group. In particular, I noticed every last one of them, including myself, was grooving to the downtempo grooves on the stereo, heads bobbin' in unison.
The cat I knew the best out of the group noticed me staring at the scene, and we didn't even have to communicate the thought; he laughed loudly and declared "Jah, Mad Wax, das ist kopf nicken!"
I don't speak fluent German, so I asked for the translation, and ever since he told me, it's been my declarative thumbs up or thumbs down statement on whether a track passes muster or not. Is your track "kopf nicken?" :)
Related: DJ Rules According to Sven Vaeth