Nineteen Ninety Never 

a date that does not exist, used to emphasize that something will never happen.

"Alright dude, I'm gonna go to the concert, score a backstage pass, then bang Britney Spears in her dressing room."
"Hahaha cracka you must be kidding. That'll happen in Nineteen Ninety NEVER bitch!!!"

Nineteen Ninety Never by Nick D April 5, 2003

nineteen-ninety-never 

A phrase used when someone says something both outdated and unfunny, following "that is so."

'All your base are belong to us!'
'God, that is so nineteen-ninety-never. It wasn't even funny when it came out.'

nineteen-ninety-never by Care June 22, 2004