Captain Jack Sparrow

"I must admit Jack. I thought I had you figured. Turns out you're a hard man to predict."
"Me? I'm dishonest. And a dishonest man you can always trust to be dishonest. Honestly. It's the honest one's you want to watch out for, because you can never predict when they're going to do something incredibly stupid."

I went back down to Largs today in search of a gold earring that Margaret lost yesterday, most likely Jack Sparrow has added it to his treasure trove.