Green’s Dictionary of Slang

1. (S.Afr.) crooked, off-beat; also as adv.

1969		A. Fugard Boesman and Lena Act I: Why you looking at me so skeef?
1977		C. Hope Ducktails in Gray Theatre Two (1981) 56: That old queen there, Sharon’s mom, [...] Should have seen the way she was checking me skeef when I asked her for more beer.
2001		Wavescape Sl. Gloss. 🌐 Are you checking me skeef? (Are you looking at me crooked, ie, spoiling for a fight?).

2. (S.Afr. gay) thus in fig. use, homosexual.

2003

K. Cage Gayle 94/2: skeef adj. (Afr.) (lit. = skew) gay (He tries to act straight, but he’s as skeef as they come) [Western Cape].