Krumb Knum 

n., adj., pl. -s
1. stupid or retarded (retarded in the slang sense, not mentally retarded)
2. an idiot or retard (retard in the slang sense, not mentally retarded)

1. Joe is being Krumb Knum right now
2. Soha is a Krumb Knum for doing the wrong homework

Krumb Knum by BWANKER May 2, 2009

knumb

The general insult to another person when playing the popular game of UNO.

How dare you put that plus 4 down, you're so knumb.

knumb by Sladist March 29, 2021