They pick that up from the guys. All of the girls I've DATY'd in Taiwan love it. A couple were shy at first, but after a couple of orgasms on the tip of my talented tongue they see the light double quick. DATY her till she comes and she'll never say no again.
The younger Taiwanese, btw, are much less hung up about this - just ask twiceAweek about his experience DATYing a young Taiwanese girl.
Remember what Confucius said:
孔子曰:君子舔屄也
(Real Men suck pussy.)