What is [nyow]?
1.
highly obnoxious noise used to annoy teachers and/or parental units.
carlyle: nyow!!!
professor doyle: whos making that noise?
...
carlyle:nyeeoooooooooooooowwwwwwwwwwwwwwww
prof. doyle: *throws chalk at a random student* if i dont find out whos making that noise im going to go fucking crazy!!!
See