Pakistanis are called as Pakis,it is a short form for Pakistanis.
Pakis is a bit derogatory. The correct term is Pakistanis.
A Twix
Yes Pakistanis are called as Persians.
Pakistanis do NOT call themselves Arab and most Pakistanis I have met would be offended to be considered Arab. Most are Moslems, like most Arabs are, but they do not call themselves or see themselves as Arabs.
No. They call themselves Muslim, but not Arabs.
You call people living in Australia, Australians.
Australians call them "lifts", but the word "elevators" is not unknown.
Watermelon, Australians just have an accent.
i presume you mean do Australians call us poms? if so yes
KIDS
it is a veranda
We call them thongs, and yes, many Australians wear them.