when dirty jokes were classics
Examples:
Twelfth Night: Act 2, Scene 5
MALVOLIO
By my life, this is my lady's hand these be her
very C's, her U's and her T's and thus makes she her
great P's.
Othello: Act 1, Scene 1
IAGO
I am one, sir, that comes to tell you your daughter and the Moor are now making the beast with two backs.
(chuckles in a proper and polite way)
And to think they made us study this at school!