As this expression denotes a negative statement, the non native Yoruba speakers have normalized the usage in the positive.
From the initial example, the non native speakers would say; “maybe you should kuku ma go home”, implying “it is better you go home”.
Puzzling!
As a Yoruba speaker, the usage of the expression “kuku ma” by other non native speakers can be confusing.
The actual meaning of the expression in English can be translated into “should not or better not”
Example: “bo ya k’o kuku ma lo s’le”
Eng: “Maybe you shouldn’t go home”