travelling

All are English Idioms (俚語)

Below please find the meanings and websites for reference.

1)bob's your uncle
Bob's your uncle means that everything is satisfactory or will work out well

http://www.englishdaily626.com/idioms.php?004#Bob%20s%20your%20uncle

2)keep your hair on : Don't rush, be calm 不要急, 冷靜些

http://pessoal.sercomtel.com.br/assis/English/Dictionaries/English%20Idioms%20(1)/idioms331.html

3) g`day = Good Day! = Hello

http://www.koalanet.com.au/australian-slang.html#G

4)dead horse : 一些既定的事情, 不能改變

a) Beating a dead horse.
http://www.goenglish.com/BeatADeadHorse.asp
Beating a dead horse is when you insist on talking about something that (cannot be changed) 白費口舌白費力氣

b) Flogging a dead horse. Attempting to revive a question ( already settled)

c) Working for a dead horse. Working for wages (already paid)