Here is some material to liven up the thread!
I have just forwarded the link through to my sales team - they are tasked with getting as many of these sayings into their sales calls today! :finger 
Ahoy: Hey! 
Avast: Stop! 
Aye: Yes 
Black spot: to be 'placin' the black spot' be markin' someone for death. 
Booty: treasure 
Buccanneer: a pirate who be answerin' to no man or blasted government. 
By the Powers!: an exclamation, uttered by Long John Silver in Treasure Island! 
Cat o' nine tails: whip for floggin' mutineers 
Corsair: a pirate who be makin' his berth in the Med-...Medi-...that sea 'tween Spain and Africa, aye! 
Davy Jones' Locker: the bottom o' the sea, where the souls of dead men lie 
Doubloons: pieces of gold... 
Fiddlers Green: the private heaven where pirates be goin' when they die. 
Furner: a ship which be yer own, not one ye steal an' plunder. 
Gentlemen o' fortune: a slightly more positive term fer pirates! 
Go on the account: to embark on a piratical cruise 
Grog: A pirate's favorite drink. 
Jack: a flag or a sailor 
Jolly Roger: the skull and crossbones, the pirate flag! 
Keelhaul: a truly vicious punishment where a scurvy dog be tied to a rope and dragged along the barnacle-encrusted bottom of a ship. They not be survivin' this. 
Landlubber: "Land-lover," someone not used to life onboard a ship. 
Lass: A woman. 
Lily-livered: faint o' heart 
Loaded to the Gunwales (pron. gunnels): drunk 
Matey: A shipmate or a friend. 
Me hearty: a friend or shipmate. 
Me: My. 
Pieces o' eight: pieces o' silver which can be cut into eights to be givin' small change. 
Privateer: a pirate officially sanctioned by a national power 
Scallywag: A bad person. A scoundrel. 
Scurvy dog!: a fine insult! 
Shiver me timbers!: an exclamation of surprise, to be shouted most loud. 
Son of a Biscuit Eater: a derogatory term indicating a bastard son of a sailor 
Sprogs: raw, untrained recruits 
Squadron: a group of ten or less warships 
Squiffy: a buffoon 
Swaggy: a scurvy cur's ship what ye be intendin' to loot! 
Swashbucklin': fightin' and carousin' on the high seas! 
Sweet trade: the career of piracy 
Thar: The opposite of "here." 
Walk the plank: this one be bloody obvious. 
Wench: a lady, although ye gents not be wantin' to use this around a lady who be stronger than ye. 
Wi' a wannion: wi' a curse, or wi' a vengeance. Boldly, loudly! 
Yo-ho-ho: Pirate laughter