diffed out 

Missed out on an opportunity to obtain, do or see something that is good and you wouldn't want to miss.
Earliest known usage 1978?

You completely diffed out on a great party.

diffed out by Howard Gillespie October 9, 2006

Im Duffed Out 

Im Hella faded right now i dont know how im going to make it home tonight. i dont even know where the fuck i parked at. I'm Duffed Out

You tryna get Drunk today im Duffed Out.

Im Duffed Out by Stacky Warbucks May 29, 2016

Differ out 

word used by knacker boy racers as a term for lookin like a muppet in there cars

here mitch feen differ out...... aw no feen me tyres are bare

Differ out by dean reeves July 7, 2008