Sayings

From the English:
as the actress said to the bishop = that's what she said
fairy cakes = cupcakes
queen cakes = muffins
muffins = English muffins
Gordon Bennett = dammit
hundreds and thousands = sprinkles
flat = apartment
waistcoat = vest
vest = shirt with no sleeves
pants = underwear
rucksack = backpack
fiddle sticks = polite cursing
suss = figure out
trousered = to pocket some money
taking the mickey/taking the piss = pulling my leg
cheap as chips = cheap as shit
crumpet = woman

From the Belgians:
work through the children diseases = working out the kinks
missing a corner = imperfect

From the Mexicans:
hablando del rey de Roma y por aquí asoma = speak of the devil and he appears
Chin = short for chingar
Nel = no
Güey = dude
Híjole! = surprise
Ahuevo = cool
Fresas = rich, preppy Mexicans
Nacos = rednecks, vulgar, common
Barrio = similar to Naco but means more provincial and less kitsch
No manches = no way! Not to be used in formal situations but maybe in front of your grandmother?
No mames = no way! Not to be used in front of your grandmother
Orale = hell yes but also used to indicate surprise or confirmation
Chela = beer
Chido = cool
Que pedo? / No hay pedo = pedo literally means fart but people say que pedo as what is up or what is the problem, among other things
Chilango = D.F. inhabitant
Chaqueta = while it literally means jacket, in Mexico it means masturbation. Say Chamarra instead
El invento del hombre blanco = I cannot believe they say this
Vale madre = I don't give a fuck
Me vale verga = same as above but worse
Verga = damn
Poca madre = cool
Chale = whoops
La neta = the truth

From the Newfie:
inhale while saying "yeah"
on the go = dating/let's go/drunk

From the Germans:
Handshoes = gloves
Apparently, the English wake up early to put their towels on chairs at the beach though the English claim just the opposite...

From the Australians:
grog = beer
heaps = lots

From the American?:
You couldn't hit the broad side of a barn with a bass guitar
It is raining like a cow pissing on a flat rock