This here picture be from a bag o' Pirate's Booty popcorn snack. Only I don't be thinkin' tis the work o' a real pirate. Look what it says thar on the package.
"Thar be good"
Tisn't the way to be sayin' that matey. By rights, that ought to be:
"They be good"
"Thar" is to be used to indicate a place like "Thar she blows".
If your wantin' to be talkin' like a pirate proper, then set sail for the english-to-pirate translator and do it the right way.
