What is Mercutio talking about here? Thou art like one of those fellows that when he enters the confines of a tavern claps me his sword upon the table and says, 'God send me no need of thee!' and by the operation of the second cup draws him on the drawer, when, indeed, there is no need. He is making fun of Benvolio's desire to fight the Capulets. He is accusing Benvolio of being afraid of the Capulets. He is accusing Benvolio of making too much of not wanting to get into a fight and thereby is secretly trying to pick one. He is accusing Benvolio of being violent only when he is drunk.