Possible Clues:

• "I'm the best at everything" for one
• Self-promoting claim
• Engage in self-praise
• Crow flies, finally, into vessel
• Crow with feathers close to nest
• Be far from humble
• Show excessive pride in second-rate kiln
• Say "I'm the best that's ever been!"
• Proudly claim son has been placed in sailing craft
• One may begin, "Who's got two thumbs and ... "