Apparently simple in the appearance but very effective in the delivery. The clean humor is a great bonus, which is hard to pull off, and the sound effects are crisp and soothing to the ear. I especially love the little details that give personality to the pirate such as the eye movement and some vocal nuances here and there (1:07 in particular).
My only minor criticism, however, is in the selection and timing of the breathing at 0:39 and the dirt mound sound effect while the pirate shovels throughout the short. Nothing serious, but I couldn't help but feel it was "off". Everything else was as sharp as a knife.
That said, the cartoon short you made was top notch (as usual). Great job.