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A yammo can have a few different definitions, depending on context. In general, it is used to refer to a person who is or is acting like an idiot, fool, moron, dimwit, simpleton, tool, lunk head, asshole, jerk, etc.
That guy almost cut me off! Fucking yammo!

I can't believe he didn't know her name was Mulva. What a yammo.

Don't be such a yammo - VOTE.
yammo by girljme June 14, 2018
Related Words

Yahboo Boostea 

1. He is the patron saint of vagabonds. He appears at concerts, equipped with tubes of glue, paper bags, and Dollar Store makeup, in order to comfort those in distress.

2. A word salad title given to someone when you cannot recall their real name.
Girl: Who is this Yahboo Boostea I keep hearing about?

Boy: He is you, you are him. Praise Yahboo.
Yahboo Boostea by JiggyWitchyPoo April 23, 2020

Yahoo News 

A collection of pointless, poorly-written news articles meant to entertain someone suffering from extreme boredom. It is not to be thought of as news, as the writers of its articles clearly must not believe they are actually writing news stories.
I ran out of homework and I had already played five hours of mario kart so I figured i woul just peruse some yahoo news.
Yahoo News by Informed,kinda November 25, 2011

Yamocity 

A word created by nelioGad to used to describe the level of yamheadness a lady possesses.
Shenseea’s level of yamocity is unbearable.
Yamocity by K.T_trashhhhh March 25, 2020

Yahoo answers

A useful novelty created by Yahoo that was designed for those who are curious about the things in this world but are too afraid to ask. Also, this allows people to share their knowledge with the rest of the world. Unfortunately, after December 19, 2006, the day the message boards died, trolls now need a new home, so it looks like Yahoo Answers are about to be hijacked by ignorant trolls.
Typical questions found on Yahoo Answers BEFORE Dec 19, 2006:

How do I cook Korean food?
What is the best way to speak French fluently?
Who will win the Super Bowl?

Typical questions found on Yahoo Answers AFTER Dec 19, 2006:

Which website has the best gay asian porn?
Why do negro people smell like gorilla feces?
If I look at me sister and I get an erection, will I go to hell?

Yahoo Answers

A website with a userbase comprised largely of some of the dumbest and laziest retards ever to walk the planet. Most are people who can somehow figure out how to use Y!A to post questions, but can't figure out even the most basic aspects of a search engine. Others want you to do their homework for them. Still more ask questions about policies of certain companies that could've been solved faster if they'd just gone to said website or picked up a phone. Many are largely unintelligible with spelling, punctuation, and grammar that would make an English professor weep. There are angsty teens, clueless middle-aged people, and senile old people. While some people ask specific and smart questions, the vast majority of posts are asked by people who can't even figure out how to figure something out themselves. The same applies to answers. Some are insightful and useful, but most are just idiocy.

Essentially, it's a site where retards can ask retarded questions and get answers from other retards. It's a horrifying look into what happens when technology puts evolution in reverse and allows people who would have been culled from the herd long ago to survive and procreate. If ever you want to see the abysmal, stygian depths of human stupidity, look no further than Yahoo Answers.
Idiot? That guy is Yahoo Answers-grade stupid!
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When your wife’s boyfriend let you sleep past 8pm 😎😎
Wife’s boyfriend: You have 5 more minutes
Me: Poggers!
Poggers by Just_Charles April 14, 2020
Word of the Day on October 26, 2026

Oblication 

A vacation, feeling more like an obligation, that involves visiting or staying with family.
So Joe where are you taking the kids for spring break vacation? We are going on an oblication to Boca to visit my mother-in-law.
Oblication by kimmerr May 5, 2011
Word of the Day on October 25, 2026

Surf Dracula Syndrome 

A phenomenon in film/television series, most notably streaming series, where the main premise is drawn out to such a point that it takes an entire season or more to get the parts of the series the audience is actually interested in seeing.

For example, if a series is titled "Surf Dracula," a majority of viewers would tune in expecting to see Dracula surfing by the first or second episode. However, the entire first season would instead be tedious padding and backstory before finally ending with Dracula surfing in the last five minutes of the season finale.
I watched "Smallville" on Netflix the other day. Dude, it was ten seasons of filler before he finally flew! Major Surf Dracula Syndrome!
Word of the Day on October 24, 2026

Northstarring

Finding your way back to the truth by fixing on one verified fact and working out from there, the way you navigate by the North Star when everything around you is spinning.
Rumours were flying everywhere, so she went northstarring — one checked fact at a time.
Northstarring by Light Bearer October 22, 2026
Word of the Day on October 23, 2026

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
Word of the Day on October 22, 2026

Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
Word of the Day on October 21, 2026
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