What is Mercutio saying? More than prince of cats, I can tell you. O! he is the courageous captain of compliments. He fights as you sing pr*ck-song, keeps time, distance, and proportion; rests me his minim rest, one, two, and the third in your bosom; the very butcher of a silk button, a duellist, a duellist; a gentleman of the very first house, of the first and second cause. Ah! the immortal passado! the punto reverso! the hay! He is calling Romeo unmanly. He showing his deep respect for Tybalt's fighting ability. He is teaching Benvolio how to sword-fight. He is criticizing Tybalt's lack of authenticity, despite his knowledge of custom.