Scuma
When you're playing games in class, but the teacher is super energetic and keeps walking behind you, in this case the teacher is a Scuma.
"The hell, Mr B is such a Scuma"
Scuma
verb. Skuu-ma. Cool and or awesome. Used to describe a noun in a positive way. When said twice in a row, the meaning is opposite.
"Oh man, that place is totally scuma!" (cool)
"Oh man, that place is totally scuma scuma." (bunk)
"Oh man, that place is totally scuma scuma." (bunk)