The Nightfly

Ok I guess as an English person I might have a slightly different angle on slang.

I like:
Modern London slang because it makes me laugh.
"Oi blud" - Good day to you sir!
"wagwan" - What's going on? (like Whassup?)
"you's a wasteman" - You sir, are a lazy slob.
"easy now" - Hello
"Innit" - Yes, isn't it just!
"Safe!" - That's good news
"allow it" - Ok this one is complex. I used to hate this one but I love it now because it's so quirky and just wrong. If I was to say "Commercial whaling blud? Allow it." that would actually mean I hate the idea of commercial whaling. The word 'allow' is used in a 'let it bypass me' or 'let it rot' sense. It's a hard one to explain effectively.

Of course, I could never say any of the above because I'd sound like a complete twat. But I do anyway.

I also like pretty much anything that comes out of a cockney geezer's mouth.
"You're a bit of a James Blunt, aren't you sunshine?"
"Just gonna go for a tommy tit, wait here"

And there's the old favourite of calling everyone "mate". Even really feminine girls.

Allow:
White English people who refer to me as "dude" or "man". You're not from San Francisco, you're from Worthing you knob. It doesn't sound cool at all.