Apologies to Popbitch! Old Jokes Home...

A Freudian, a Jungian, and a Lacanian walk into a bar.
The Freudian orders a cigar. The Jungian orders an
Etruscan mask to conceal his face. "You cretins!"
says the Lacanian. He then orders a beer, which,
however, he does not desire.

(well, it made me laugh...)