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This, I believe, is how the owners came up with the name:
Scene: drinking party
Owner 1: Pare, sa tingin ko lasing na kayo. Pwede pa ba tayo mag toast? (Guys, I think you are all drunk already. Can we still have a toast?)
Owner 2: Kaya pa, kaya pa... (We can, we can...)
Owner 1: Kaya pa? (Can we still do it?)
Owner 3: Ya, kun kaya, toast! (Yeah, if we still can, let's toast!)
Onwers: Kampai!
:)