Green’s Dictionary of Slang

galay v.

[Fr. galeux, itching, suffering from scabies, thus the image is of one who is constantly scratching their head – in this context through perplexity. In 19C Fr. sl. the term, from the same basic meaning, also meant boss or master]

(W.I., Trin.) to hesitate, to speak or act indecisively.

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