A phrase used in response to someone starting a new thread/conversation/tweet/etc... about a topic/website/video/etc... that was discussed ad nauseum by the rest of the civilized world a number of months/years ago.

The phrase is derived from the Back to the Future trilogy of movies which involved a DeLorean that could travel through time. The plot of the first movie in the trilogy revolves around the main character becoming trapped in the past when he can't refuel the DeLorean.
Moron: The Cake Is A Lie!

Reply: Welcome to two years ago... Don't forget to refuel your DeLorean.
by Etragorn December 24, 2009
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A gut feeling you get when you're about to leave to go somewhere. You know you're forgetting something essential to your trip/destination but can't immediately place your finger on it.

The feeling is strange and based mostly on intuition, similar to deja vu. If you get this feeling, you may be tempted to dismiss it as a delusion, but after a short period of time something will trigger your memory and you will remember what it is you forgot. To avoid any inconveniences, the best thing to do when you get this feeling is to run through a mental or physical checklist on what you have packed and what you haven't.

This notion made an appearance in the 1990 family movie, Home Alone, when the main character, Kevin, is forgotten at home by his parents on their Christmas vacation to France.
Joe: "You ready for this trip to Amsterdam?"
Brett: "Hell yes, the only problem is that I know I'm forgetting something, but I can't think of what it is."
Joe: "Oh, don't worry about it... you probably just forgot to feed the dog."
(3 hours later, when checking in at the airport)
Brett: "Shit! I forgot my passport!"
by chris1152 March 29, 2009
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Also, said as a response to, "I'm gonna go drop the (Cosby) kids off at the pool." as a way to remind someone to make sure there is toilet paper.
by JARNYC January 24, 2008
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Similar in nature to zapp! whereas it is used after insuffulation of cocaine but only when a friend's mother text messages her "don't forget your mudboots" you must then repeat the phrase; usually exclaimed with powder residue on one's nose, mouth, shirt, etc.
After lifting his head from the mirror, VCR all over his face and shirt, John slurred to the rest of us, "Don't forget your mudboots."
by Doctor Girlfriend February 29, 2008
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1. I could not care less.

2. I don't give a $#!7.

3. I really don't care.
TV Baby : Did you hear about (insert name of least favourite untalented Hollywood twitterati)?

Kid Kerouac : No, not just, yet. I'm sure it'll be the very last thing I'll forget. Wait though, I'm just gonna check on the bicycles; you can tell me when I get back. (Disappears forever)
by Guru Voodoo October 18, 2010
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The lyrics to a song that's on The Breakfast Club or something. If you're searching this you are extremely bored and you have nothing better to do.
Don't you forget about me! Don't, don't, don't! Don't you forget about meeee!
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"Delete and forget" is the eversion of "forgive and forget."
Occurs when an email is written hastily, usually late at night, under the influence of exhaustion, alcohol, drugs, anger, ignorance, stupidity--all the usual urban stuff.
"SEND" is hit too quickly and shit happens.
After many more emails, calls, texts, etc--there is mutual agreement to "D&F" (DELETE and FORGET)
I shouldn't have sent that email last nite to the hot new intern. When I reread it this morning, I coulda died. But we talked and stuff--and agreed to "DELETE and FORGET (also, D&F)".
Otherwise, my ass be fryin in HR.
by Wyeth October 3, 2009
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