For a Greece Greek, the use of dialect in this graffiti is adorable. The thing is though, Cypriots don’t write graffiti in dialect to be adorable, they write it because that is their language.
Ναι + ναι = ναι
Ναι + όι = όι
Ναι + εμμ = όι
Yes + yes = yesYes + no = noYes + maybe = no
They’re let down by Greek script btw: that’s Turkish hem for “maybe”, and I’m reasonably sure they pronounce the h. Telltale blot at the start of the word.
Left as a thought exercise: