deja du

The moment of realization when speaking to someone that you've already told them the story your telling them.

"I called deja du on Tom when he started telling me about the bar fight he's already told me about..."

by AlxCondor October 10, 2014

deja du jour

The best (or first) feeling of deja vu for the day.

What a sec! This feels so familiar. This is my deja du jour.

by ksmanning March 19, 2010