Iambic pentameter follows an abababab rhythmic pattern.
Example:
"What light through yonder window breaks?"
See how the rhythm sounds when you read that sentence:
what light (ab) through yon - (ab) der win- (ab) dow breaks?
Answer:
Doodle is just happy to be with his brother, and that his brother is taking interest in him. Even though his brother is actually ashamed to be seen with Doodle.
Explanation: