Paddy and Murphy go shopping

Two Irishmen in London whilst looking for work were strolling down Oxford Street.. After walking for a few minutes, Paddy turns to Murphy with a look of amazement on his face and says: "Murphy, will ye have a look at dat shop over dere, I taught that London was supposed to be expensive but dat shop is as cheap as chips."
Murphy says: "Paddy you're right so you are, will you have a look at dat. Suits £10.00, Shirts £4.00, Trousers £5.00, Oi tink dat we should buy a job lot and take dem back to Ireland. We would make a tidy profit selling dem in Dublin so we would."

Paddy says in agreement: "Murphy dat is as good an idea as you'll ever have, but Oi'm pretty sure dat you have to pay taxes and duty on tings loike dat. The shopkeeper will never let us have them if he tinks dat we're gonna export dem and make our fortune, so he won't."
Murphy thinks and says: "Paddy, I've got an idea! You can do de best English accent out of de pair of us. You go in dere and do de talkin' and Oi'll just stand behind you and say nothing. He'll never guess we're Irish so he won't."
"OK Murphy", agrees Paddy, "Oi'll do de talking, you just stand dere and look English."

So the two visitors to our illustrious capital city go into the shop, where Paddy is greeted politely by the owner. Paddy then proceeds to do his best Phil Mitchell impression; "Awwwight Guvnor, Oi'll 'ave 20 of yer 'Whistle 'un Flutes', 20 'Dickie Dirts' and 20 pairs of strides. And if yer don't mind I'll be paying wiv the 380 'Pictures of the Queen' in my 'Sky Rocket'."

Upon hearing this request from Paddy, the owner smiles, takes a look at Murphy as well then asks Paddy "You're Irish aren't you?"
Quite bemused, Paddy replies, "Oh be'Jasus. Mary mother of Christ, if dat wasn't me best English accent. How in God's name did you know dat we were Irish?"

The Owner replies. "This is a dry cleaners mate"