Green’s Dictionary of Slang

1. (Irish) a derog. term for a member of the working-class.

2000		P. Howard Miseducation of Ross O’Carroll-Kelly (2004) 58: Every focking skanger in Dublin is wearing Ralphs.
2005		P. Howard Curious Incident of the Dog in the Nightdress 234: [...] like the focking skanger that he is.
2021		P Howard Braywatch 23: ‘Helen Curran doesn’t talk like a skanger’.

2. see scanger n.