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To Disappoint someone or a group of people. particularly a fan base or followers of a brand, company, or franchise, through means of Bait and Switch, Blue Balls, or outright False or Misleading statements/promises.

Said exactly the same as the number it represents: 53, The SuperBowl with a half time show that blue balled the entire Spongebob fan base after they were lead to believe the show would be an Homage to the "Sweet Victory" scene of the series at the Bubble Bowl.
Guy 1: So did you hook up with that chick at the bar last night?

Guy 2: nah man, She LIII'd me hard. Her number was just some random guy's phone number.

Guy 1: oof
LIII by TranscendentBoredomOverlord February 4, 2019
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Super Bowl LIII 

The worst super bowl EVER!!! The Patriots beat the Rams 13-3, the halftime show was bullshit (Maroon 5, Travis Scott, and Big Boi) played in Atlanta GA. Nothing really happened. Luckily Tom Brady didn’t get the MVP! it was Julian Edelman (he still didn’t really do anything)
Super bowl LIII just got from bad to worse
Super Bowl LIII by Kidswillbekids January 22, 2020

Super Bowl LIII Halftime Show

the most disappointing halftime show to date, promising sweet victory, but providing sicko mode instead.
The Super Bowl LIII Halftime Show was a huge letdown. Let's dislike it on YouTube!
The most well known Pakistani Shia word used. The A is dropped from Ali to become Liiii, and when said, it intensifies the matamdari by 100x.
Anjuman: Abid-e-Beemaar ki aankhon sai khoon rukta nahi
Matami: LIIIIIIIIIIIIIIIIIIIIII
Liiiii by MutahMan October 18, 2010

MelaDonaDe-liiine 

There is no Main Definition asides from it was made from a Beer
bro I want some MelaDonaDe-liiine
A Disgusting Old lady That Exchanges sex for money or Meth
''Dude your ex was a liiizard"

Liiiiiiiiiike 

The word used to define your feelings for a women without saying that you have a crush for, or have feelings for her.
Boy: I Really Liiiiiiiiiiiiiiiiiiiiiiiiiiiike You
Girl: You Like Me ?

Boy: No, I Like Liiiiiiiiiike You. You Know.
Liiiiiiiiiike by Htimmm August 19, 2011
More from Urban Dictionary
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026
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