Green’s Dictionary of Slang

1. (S.Afr.) a native of the Transvaal, generally looked down upon by the citizens of Cape Town, esp. when they appear there on holiday.

1976		informant in DSAE (1996).
[1984		P. Slabolepszy ‘Under the Oaks’ in Mooi Street (1994) 41: If they can’t beat a bunch of so-called professional poeftes from across the Vaal, they not worth the time].
1996		CyberBraai Lex. at www.matriots.com 🌐 Vaalie. These are the horde of creatures that descend on Cape Town once a year at Christmas time. They traditionally drive Big Expensive Cars and are inevitably towing Venter Trailers which they store the kids in. In the New South Africa, they are also known as ‘Gauties’, this word is derived from ‘Gauteng’, which is where we wish they would all go back to. Anyway, be nice to Animals, hug a Vaalie.
2006		D. Fleminger Back Roads of the Cape 45: As a devoted Gautie (or Vaalie, as we used to be called), I refuse to add fuel to the already insufferable fire of white Cape Town’s smug self-satisfaction.
2010		IOL News (Western Cape) 24 Dec. 🌐 Vaalies from Bedfordview [...] ran outside to watch.

2. in attrib. use of sense 1.

2010

IOL News (Western Cape) 24 Dec. 🌐 The Vaalie captain of South Africa and the rest of his men have been conducting a thinly disguised [...] slap-down agenda against India.