Combining characters pop up in the most interesting places, often where and when you least expect them! ٩(•̃̾●̮̮̃̾•̃̾)۶

The good news is Unicode 8 will make them way more frequent! (alternate emoji skin colors are specified via combining characters) much as Unicode 6 made astral characters way more "in your face" (by standardising emoji in the SMP)