Help with some words

[johnray]

Sukhumvit lor - Am I going back to location question?  This means confirm like 'sukhumvit true?'.

Prajao - Can I use this word around children?  It's means Oh my god?

Chitoi - What does this word mean.  I say it to babies and they always laugh and repeat it. But I ask them and they don't tell me what it means.  Chi tooooooi.

Arai na - What does this mean.  Explain the different contexts.

Sawadee ka churne ka - What does churne mean?  Like Churn la ka. And sometimes just 'churne'.

What is the difference between lee and leekuwa - Means 'and'.