Pronounced also as “Yarrr!” and “Arg!”, the word “Arrr!” is traditionally said by pirates when responding "yes" or when expressing excitement. ... Probably not, though it's tough to say exactly how most pirates really talked. There are of course no audio recordings of pirate speech.

Where does pirates saying Arr come from?

The pirate phrase “Arrrgh” appeared in film as early as 1934; a character also uses the phrase in a 1940 novel by Jeffrey Farnol. But the phrase and accent were popularized by Robert Newton, the actor who played Long John Silver in the movies and on TV through much of the 1950s.

Do pirates say me instead of my?

The first popularized pirate tale was Robert Louis Stevenson's Treasure Island in 1883. However, Mr. Stevenson's pirates all used proper Victorian English(!), like "Shiver my timbers." So no possessive "me"s were used there.