This year, 2015, is the 20th year we'll be celebrating Talk Like a Pirate Day. This fun event was created by John Baur (Ol' Chumbucket) and Mark Summers (Cap'n Slappy), of Albany, Oregon, in 1995.
Here's some pirate jargon to get you started:
Aye - yes
Bilge-sucking - insult
Blow the man down - command to kill someone
Booty - treasure
Cleave him to the brisket - to cut across the chest, from one shoulder to the lower abdomen
Heave Ho - give it some muscle and push it
Jolly Roger - pirate's flag including white skull and crossbones over a black field
Man-O-War - pirate's ship outfitted for battle
Scallywag - mild insult akin to rapscallion or rogue
Scurvy dog - the pirate is talking directly to you with mild insult
Shiver me timbers! - comparable to "Holy Crap!"
Son of a Biscuit Eater - insult directed towards someone you don't like
Three sheets to the wind - someone who is very drunk. One sheet is mildly drunk and four sheets is passed out.
Walk the plank - punishment in which person walks off a board jutting over the side of the ship while at sea. The consequence is drowning and a visit to Davy Jones' Locker.
Yo Ho Ho - cheerful exhortation to demand attention
(source: Pirate Treasure Now)
And did you know...at certain Krispy Kreme locations around the country, you can get a free Krispy Kreme doughnut just for speaking pirate! And even better, if you're in full pirate garb, they'll give you a DOZEN Krispy Kreme doughnuts! That's pretty good! Check their website for details, and check with your local Krispy Kreme to see if they're participating.