have one

short for "have a good one," which itself is, of course, short for "have a good day."

Johnny: "See you tomorrow Bill"

Bill "Have one!"

having a bash

To masterbate, used in the UK. Other terms: Wank, etc.

"Did you hear about John Gris who works in Macdonalds?"

"No, what?"

"He was only caught having a bash in a Big Mac!"

have a bomb

to have an amazing, fun and exciting time with your friends.

'let's go have a bomb.'

'mate, are we bombing tonight?'

Having game

When someone (preferably a guy) is able to pull off anyone they desire usually quick and affirmative, by saying either the sweetest thing or act in a polite manner.

*Girl walks by*
Daniel: Man, who's the gorgeous girl approaching the front desk?
Mike: Oh, that's Jessica. She's new around here, why you ask?
Daniel: She's beautiful. I'm going to talk to her.
Mike: *laughs* You think you got game like that?
Daniel: Just watch me.

*Daniel walks up to Jessica*
Daniel: Hey girl, I spotted you from a modest distance. Let's walk together and may be fall for commitment.
Jessica: *Giggles* You're sweet. I would love to walk with you. *Blushes*

Daniel walks pass Mike and says: That's what I call having game.
Mike speaks to himself: Damn my mans got game.

have a niceone

urban way to say have a nice day

hi Franc , wats up , have a niceone buddy.

have at ye

Olde English phrase. To 'attack' or announce an attack on a target, primarily one you intend to engage honourably in meleé.

"Have at ye!" exclaimed Sir Melmot, as he drew his rapier and lunged for the corrupt Lord Exetar.

have one

This is a shorthand for the overused expression, "Have a good day," and is slowly catching on to be much more hip!

As I drop my friend off and he leaves the car, I shout "Have one!"

He replies, "Word...later!"