In order to understand some of my writing to those who don't understand that someone from Britain an someone from America have different speech, here's a little bit of help:
Toilet=Bathroom
Ice lolly=Popsicle
Plaster=Bandage
Biscuit=Cookie
Chips=Fries
Crisps=Chips
Pudding=Dessert
Butty=Sandwich
Fairy Cake=Cupcake
Peckish=Hungry
Cozzy=Swimsuit
Jumper=Sweater
Knickers=Panties
Muffler=Scarf
Pants=Underwear
Trainers=Sneakers
Trousers=Pants
Bugger=Jerk
Barmy/Daft=Stupid
Knobhead=Dickhead
Plonker=idiot
Radge=Insane
Sod Off=Piss off
Slapper/Slag=Tramp
Tosser/Wanker=A jerk off
Ace=Awesome
Arse=Ass
Cheeky=Flippant
Cheerio=Goodbye
Fancy=Crush on
Gutted=Upset
Kip=Nap
Knackered=Tired
Shite=Shit
Chemist=Drugstore
Cinema/Film=Movies
Dosh=Money
Lift=Elevator
Pavement=Sidewalk
Queue=Wait in line
Telly=Television
Tube=Subway
I think that about covers it...I've lived in the States for ten years, but I still don't quite understand some of the 'lingo.' I try my best to use it for those who don't understand my "native language," but I do slip up. I apologize. Feel free to ask about anything I say in the comments!