Something made up by the insecure people who run Planet Fitness (Planet Fatness) gyms. They set it off when anyone remotely dedicated to training is in the area. They claim to be a "judgement-free" gym, yet ironically they won't even let those who they deem "lunks" into their facility. The people don't want to "be intimidated" by fit gym goers, yet the only thing intimidating them is their own insecurities.
Planet Fatness Worker: He looks like he might actually be strong and dedicated to his training...what a lunk! Set off the lunk alarm!
by pbjoe June 18, 2009
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When your pants bunch up at the precise area in which you would usually store an erection thereby creating the illusion of arousal.

Generally speaking, discovery of such a false alarm usually comes at the hands of someone who is familiar with you nether regions and would feel comfortable enough testing it out.
I thought he'd finally gotten over his fear of intimacy so I went to grab and just got a handful of Levis... yup, it was just a false alarm.
by Joseph/Laura October 25, 2007
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The feeling you get when you wake up on your day off work; on the weekend; or a public holiday as early as you would for work. Generally the alarm clock is off and there is no sound, but you still hear it for some annoying reason.

Of course you don't realise you can stay in bed all morning and for some moment feel like you never got any sleep at all.

Though, upon realisation (and falling back asleep) you feel better then if you woke up to your girlfriend fucking you. (well maybe not if shes good!)
Argh, I had alarm shock this morning and couldn’t' get back to sleep!
by Shizman September 14, 2007
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The thing that scares you awake in school.
Little boy: ZZZZZZZZ
Fire alarm: BEEP BEEP BEEP BEEP
Little boy: Oh shit
by One little hellian February 10, 2017
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Noun

A person who REALLY knows when people lie and tells them to their face.
man 1: I'm not gonna be here on saturday *giggles while looking at man 3 play DooM instead of making eye contact and being honest*

Man 2: (I know he's lying.) YOU LIE!

Man 3: OOH! The Liar Alarm is going off! *punches man 1 for lying*
by Buzzed Lightbeer January 30, 2006
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When having sex with a girl in her parents house, or anywhere risky, once you are done ejaculating, you yell as loud as you can so everyone can hear awoooooga!!! or FIRE!!! and then exit the area immeadiately
Hey man, I went over to Becca's house during her little brother's birthday party, and I did a perfect fire alarm! They actually called the fire department!!!
by Matt and Rob March 15, 2008
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Having the need to go poo. Once getting to the toilet, nothing seems to come out. You decide to go later on during the day when you really need to go.
Daughter: Mom. Hurry up in there! I have to drop a deuce!!

Mother: Okay

Daughter: sitting on toilet..."Why isn't anything coming out?

Daughter: FALSE ALARM!!! I guess I should wait and try again later.
by Melrsose December 21, 2009
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