Something of poor or bad quality. Usually used to describe objects, but can also be used to describe a person. Derived from the ancient Chinese word yian and the Latin word gordian.
Person 1 - "Brooo my wifi is so bad, im on like 300 ping"
Person 2 - "Damn dude you got that *yiango* wifi"
Usually meaning something of extreme poor, or insufficient quality.
Person 1: Bro I can't play anymore I'm lagging out!
Person 2: Man you got that yiango wifi.
Yiango - Usually means something of poor quality
Person 1: Bro why is this taking so long to load
Person 2: You got that **Yiango** wifi