This word is an adjective, meaning silly. The noun form is swisnoff. Originated when I was trying to read my friend's poem, and instead of reading swish of, I read swisnoff. Example: That dog looks so swisnoffy in that silly Halloween costume!
SWISNOFFY
Meaning of SWISNOFFY in English
Slang English vocab. Английский сленговый словарь. 2012