One of the worst dancers that ever existed.
Commonly known to be heavily homophobic, racist, and quite aggressive when shes not chugging down bong water.
Person 1: Holy shit shes beating the shit out of that gay guy!
Person 2: Careful she must be a Stibbard, better get her some bong water!
Sibbar can be used in the place of the word "sister." It means the same, only it's 10x more fun to say. Especially if you say it with an annoyingly long "a" sound.