To firefighters (mostly) an incident, situation or place that is or could be a dramatic rescue, or is reminiscent of a rescue on the show Emergency!, which featured Squad 51.
(Upon looking at a factory machine room full of pipes) "This place is so Squad 51!

"That extrication today was pure Squad 51 stuff."
by Ironsman6 January 21, 2004
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A Crappy biro from some foreign country.
Says 'Made italy' on the side.
Pens don't write after more than 10 lines, Burst in your pocket, Don't write on cold days.
Comes in boxes of 50.
Avoid like the plague.
Ah crap, My grand parents bought me a box of corvina 51s...
by Contract_Killer245 May 30, 2005
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the strokes lyrics

Talk to me now I'm older
Your friend told you 'cause I told her
Friday nights have been lonely
Change your plans and then phone me.

We could go and get 40s
Fuck goin' to that party
Oh really, your folks are away now?
Alright, let's go, you convinced me.

12:51 is the time my voice
Found the words i sought...
Is it this stage I want?

The world is shutting out...for us.
We were tense for sure,
But we was confident...

Kiss me now that I'm older
I won't try to control you
Friday nights have been lonely
Take it slow but don't warn me

We'd go out and get 40s
Then we'd go to some party
Oh really, your folks are away now?
Alright I'm coming...

I'll be right there.
by Cyna December 16, 2004
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Dominic's Favourite Fact #51:
Given a triangle ABC, the angle bisector at A meets the perpendicular bisector of BC on the circumcircle.
A02: How did you solve BMO1 2014 P5?
Inquisitor: Using DFF#51.
by lnquisitor June 24, 2021
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The place where WE will free our brother and sister aliens being held captive by the government on the 21st of September.
*Scene just outside Area 51*
Guards: What the hell is going on?!
Random Guy #1: *eric andre voice* Let me in … LET ME INNNNNNNN.
Random Guy #2: We Naruto run we will be faster than their bullets.
Steve: They can shoot us but they cannot shoot everyone.
by xxxcatation July 14, 2019
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There will always be more rules. Always.
Dude 1>Dude, i just finished learning all the Internet rules.

Dude 2> Rule 51
by DoomB January 14, 2011
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An exclamation, from the 70s show Emergency.

It comes from the fire department dispatch guy that goes "Squad 51!"
"(random DTMF tones) Squad 51! (insert random dramatic event here)

"roger, squad 51, KMG365"
by IrishRepublicanArmy November 28, 2003
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