What Famous play by shakespear have the phrase, "Et tu, Brute"?
Brutus Brutus is a "cognomen" of the Roman "gens Junia", a prominent family of the Roman Republic. The plural of Brutus is "Bruti", and the vocative form is "Brute", as used in the quotation ""Et tu, Brute?"" ("you too, Brutus?"), from Shakespeare's play "Julius Caesar".
The lady doth protest too much, methinks The lady doth protest too much, methinks is a figure of speech originally found as a quotation from the  1600 play "Hamlet" by William Shakespeare. It is used in everyday speech to indicate doubt in someone's sincerity.