Meaning:

crowded, packed, overload, full.

It means alot of people. And I mean ALOT.
Everyone and their mom seems to have a last.fm account these days.

I couldnt get the stuff because everyone and their mother was standing in line!

I went to the concert last night and everyone and their mother was there!
by calicornio August 16, 2007
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Basically, this is a saying used to describe something that a hell of a lot of people have.
For example, saying "everyone and their dog has a Ford Mustang" would be appropriate.

Or take the following conversation:

emo kid: "check out my ears, I just got them tapered, I'm so original"

person with an identity: "everyone and their dog has gauged ears in 2005"
by bryan18 August 16, 2005
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What you say when there are a lot of people.
usually only used when a lot of people have a certain article of clothing or in the same place.

don't use if with someone over the age of 60, or with someone you are trying to impress with your intellect.
Jane: did you go to the twilight premiere?
Lucy: ugh. yes.
Jane: was there a lot of people?
Lucy: just about everyone and their grandma.
by natalienegro March 24, 2009
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A common phrase used by the Daedric Lord Shegorah in the popular video game TES IV: Oblivion
YOU: "Hello Shegorah! What's up?"
HIM: "cheese for everyone!"
YOU: "...ok then"
by Adoring_Fan_No.2 March 6, 2010
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A quick way to end a story that your audience has found uninteresting.
Bob: So i was walking through the mall and.....
Joe: Jesus is this story ever gonna end??
Bob: ....so then i saw Steve, and then everyone died... The end.
by jspencegah47 December 23, 2010
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The questioning of where a certain group of people are currently located.
* Julia walks into an empty room.
Julia: where are everyone?
by sgtdallas November 11, 2008
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A concept, person or experience with near universal favorability. Examples include an open bar, Mr. Rogers, and blankets straight from the dryer. If you don’t love it, you don’t love yourself.
“Want to watch a baby panda ride a bike?”
Everyone loves it

**Can also be used apropos of nothing, effectively replacing a standard greeting or any recognized form of social interaction.
“How are you?”
“Everyone loves it”
by Gary The Squirrel TM December 1, 2021
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