lighty
/ˈlʌɪti
/(also laaitie, litie)
noun (plural lighties) South African informal
A boy or young male adult.‘This lighty (little one) called Mnisi will taste my power come April 5,’ he said amid deafening applause from a packed hall.
Origin
Apparently from the adjective light2 from light of heart + -y2; the variant laaitie shows Afrikaans influence.