In 411 BC Aristophanes used erect phalluses to great comedic effect in his play "Lysistrata".
Here are just two examples, though more abound throughout the play.
CINESIAS:(To the audience and pointing at his jolting prick)
My God, this prick! It’s worse than starving Hercules, waiting for his lunch.
HE LIES DOWN WAITING WITH HIS PHALLUS POINTING AT THE SKY. MYRRHINI ENTERS WITH A PILLOW.
and then later:
That’s a… that’s a… Spartan message rod.
Hah! If that’s a Spartan message rod then so is this (Indicates his own phallus)
Don’t worry friend, I know what’s up. You can tell me the truth. How are things with you men in Sparta?
SPARTAN HERALD: (Moral relaxation ensues after the disclosure but he is still visibly, very uncomfortable physically because of the affliction (ed note: the "affliction" is an erection))
All of us, Spartans, as well as allies, have stiffies like this one. We all need a fuck!
(ed. note: the original Greek word for "fuck," according to Google is: γαμω)