Y'know, it's interesting how you guys were talking about what
distinguishes a Singaporean from the crowd when overseas.
When I was in New York City with my American ex, I was shocked when
an Asian lady at the next table looked over, and asked me, 'Excuse
me, I couldn't help listening ... but, are you a Singaporean?' And
I was
!! 
I later asked her how she knew and she said, 'Oh, easy... by your
accent!' and I was stupefied... because I never used Singlish when
talking to my ex - he'd never understand it - so... hmm...
interesting!! 
Turns out she's a retired nurse from Singapore, visiting a
nurse-friend working in NYC! At that time, I remembered thinking,
darn... how I wish I was a nurse working in NYC!! 