by blue hair girl 2213145 November 13, 2020
It is a slur to ducks referringd to their elongated snout/nose or "duckbill." It is used to insult people with bg noses. If you have a "D-Pass" you can say it, but only with permission.
Person 1; I have a pretty big nose...
Person 2; its ok you can get a nose job.
Person 3; SUP DUCKBILL
Person 2; its ok you can get a nose job.
Person 3; SUP DUCKBILL
by blue hair girl 2213145 November 13, 2020