Question

Nay, 'tis no matter, sir, what he 'leges in Latin.
if this be not a lawful case for me to leave his
service, look you, sir, he bid me knock him and rap
him soundly, sir: well, was it fit for a servant to
use his master so, being perhaps, for aught I see,
two and thirty, a pip out? Whom would to God I had
well knock'd at first, Then had not Grumio come by the worst.
how is this verbal irony, from taming of the shrew?