Hipster facial hair style. Facial hair on men (and, rarely, women) often forms an inverted triangle directly beneath the lower lip, while the true beard forms further south. Leaving this small triangle of hair intact while shaving off the hair below it produces a jazz patch. An early popularizer of the style was Frank Zappa (RIP).
He got rid of the goatee; now he's got a jazz patch and some ugly-ass sideburns.