National Talk-Like-A-Pirate Day

Today (actually yesterday...the 19th) was a National Talk-Like-A-Pirate Day, according to my boss. I don't know who came up with that idea, but today was the day to celebrate? talking like a pirate. I don't even know how. My boss tried, but I couldn't understand what he's saying...I shall learn so that next year, I can observe this special day by talking like one.