'Lamey' is a play on the word 'larney, lah-nee' etc. The was commonly used by upper-class white english-speaking South Africans in the 1970s and 80s.
It has differing interpretations. For example, it is regarded as a loose term for 'white man, boss etc.' by some domestic servants.
Yet it is also used as an alternate term for poshy, classy and wealthy. In this instance, it has regularly been used by female South African journalists. South African journalist, Jani Allan coined the word 'lamey'.
And the Bee-ems and other lamey cars filled with business men and their birds. Jani Allan in Sunday Times. 6.6.82