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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Planet Fitness, the home of the self-conscious exerciser, decided to get rid of the meatheads and attention seeking Guidos by hooking up an alarm system for vain bitches who find it impossible to work out without the attention of everyone else in the room.
"How's I s'posed ta get my swell on at da gym widda fuhckin Lunk Alarm goin off e'ry time I grunt"
by Boo45 April 7, 2010
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An utterly stupid alarm in Planet Fitness gyms that goes off when people are "too loud" and therefore "making the other people in the building 'uncomfortable.'"

There are numerous problems with the "Lunk Alarm" that make it not only idiotic, but also extremely dangerous:
1. The alarm can be triggered by the sound of people grunting or racking weights, which is to be expected in a gym. Also, in a viral Youtube video, it was revealed that merely dropping a PEN on the ground triggers it. "Really? A pen?"
2. The alarm is VERY LOUD, like an air raid siren. It's also very abrupt, which can startle people and make them drop their weights, potentially causing serious injuries.
3. In a gym that takes pride in not judging people, this alarm is judgmental by definition. "Lunk" is short for "Lunkhead," which is a derogatory term for someone who is slow-witted or stupid.
Numerous Youtube commenters have pointed out the stupidity and dangerousness of the Lunk Alarm:

~ "Planet Fitness is the only gym that doesn't like you going to the gym."
~ "It’s ironic how Planet Fitness claims to be 'judgement free' but it’s literally the only gym out there with an alarm based on judgement."

~ "The Lunk Alarm is the equivalent of a librarian telling people to shut up through a bullhorn."

~ "Planet Fitness isn't a gym, it's a library with weights."
~ "TheLunk Alarm is specifically made to judge you for making noise and make you feel bad, and to insult you, lunk is short for lunkhead which means slow-witted person, so basically they're calling you slow-witted because you're exercising. what a judgement free zone. Also because we're human the loud noise will startle us if we're not expecting it and someone can get hurt, maybe even sent to the ER."
by Someone who kinda exists June 24, 2022
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The lunk who wrote this "definition" is so insecure that he needs to complain about a place that's safe for people who may just be getting the nerve up to begin. It looks like he's more interested in that $10 than the wellbeing of others. Nice.
The lunk alarm sounded when that guy clicked the SUBMIT button.
by MiSC-en-Scène November 6, 2015
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