"Santa Maria! Ayak gibberish" is what it sounds like to me. Of course, considering that he has no jaw, tongue or lips, it can be a bit difficult to understand what he's saying. Maybe it's actually "Get off my island, ya scurby landlubbers!"
The leprechaun, from what I hear, says something along the lines of "so you want my gold? there's some people who's the problem." (beats "They're after me lucky charms!")