What is this means: Core Singaporean?
You are either Singaporean or you're not. Where got Core or not Core one? You are made from the rocks here in Singapore meh?
Ron Tan suggested:
Married Singaporean without kids = Duo Core.
Married with 2 kids = Core 2 Duo.
Married with 4 kids = Quad Core.
Or maybe it is Singaporeans who have awesome abs.
Or maybe it is Singaporeans whose lives are Kang Core and Core Lian.