Green’s Dictionary of Slang

vex-money n.

[Carib.E. vex, irritating, annoying + SE money]

(W.I., Trin.) money a woman carries with her on a date. If, for whatever reason (usu. the denial of sex), she is forced to make her own way home, she has some funds.

[WI]cited in Allsopp Dict. Carib. Eng. Usage (1996).