A person who is toxic and a despicable human being near a group of people.
There is a fungus amungus. Hurry let's get away from it.
by Lochad November 19, 2019
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A prime example of a great compliment you can give to a nice person.

Also a condition for your feet, where literall mushrooms grow between your toes. The Fungus Amungus condition is known to be quite painful.

Fungus Amungus comes from the old latin word "mater tua" which means "greatness to you"
Also it is the inspiration for the popular videogame "Among Us" title.

(if you ever experience symptoms of Fungus Amungus, seek help at your local doctor immediately)
-hey, you have a nice haircut
-thankyou, fungus amungus!

or

-I am sad to inform you that... you have the Fungus Amungus.
by Helpful_Nectarine69 November 2, 2021
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Initially originating from the Campania region in Italy, Naples where Boper and Stebe found a forest full of dancing mushrooms. This is the crucial moment when Boper and Stebe exclaimed, 'There is a fungus amungus!!'. After a hot dude named Lando heard this statement, he decided to go onto tenor and create a gif about it. Ever since, Sebastian (otherwise known as fungus the fourth) has spread this meme in order to create awareness of Boper and Stebe's adventures in Naples.
Soy Normie: 'Babe, why do you keep saying that?'

Based Chad: 'Initially originating from the Campania region in Italy, Naples where Boper and Stebe found a forest full of dancing mushrooms. This is the crucial moment when Boper and Stebe exclaimed, 'There is a fungus amungus!!'. After a hot dude named Lando heard this statement, he decided to go onto tenor and create a gif about it. Ever since, Sebastian (otherwise known as fungus the fourth) has spread this meme in order to create awareness of Boper and Stebe's adventures in Naples. '
by xXJesus_Christ321Xx March 26, 2023
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