Date night is the negotiated exchange of a night out for
the lady resulting in anal sex for the man.
A double
entendre derived from the dried date (fruit of the date palm) resembling an anus.
M: 'So is
Wednesday night date night?'
F: 'Only if I get a three course meal, a show and we arrive in a
limo.'
M: 'Do we get to do it in the limo?'
F: 'Throw in the best champagne
on the menu and you've got a deal.'
M: 'I love date night.'