Green’s Dictionary of Slang

(UK black teen) a fool; also attrib.

2005		Jade LB Keisha the Sket (2021) 21: ‘wot did dat wasteman want?’.
2010		BBC News ‘Report on Teenage Slang’ 11 Mar. [radio] wasteman = idiot, fool.
2016		Independent 5 Jan. 🌐 There are insults and terms of disapproval such as wasteman, gasman, neek (both nerd and geek), dinter and bell for males.
2016		Skepta ‘Text Me Back’ 🎵 I ain’t one of them wasteman tryna flex on Insta.
2016		Masicka ‘Hard Fi Dead’ 🎵 Pussy deh a wasteman weh gyal a piss ’pon.
2017		poster at anti-Trump demo 30 Jan. Trump Is a Wasteman.
2017		Globe & Mail (Toronto) 4 Aug. 🌐 ‘They’ll say, “Oh, this guy’s such a waste yute [useless person]”’.
2020		G. Krauze What They Was 104: I say how’s man buying guns and ice with p’s he inherited from his dead grandma? That’s some wasteman ting .