megalodontia 

the most difficult king salmonid to beat. also known as "joe" or "joe mawmaw" because of a mistranslation when it was announced.

"yeah i defeated a megalodontia during yesterday's rotation"
"you mean a joe?"
"who's joe"
"joe mawmaw"

megalodontia by Cumulus April 9, 2025

megalomentia 

megalomania & dementia at once // a portmanteau of megalomania & dementia

Let's hope this megalomentia up on high doesn't cause the launching of nukes.

megalomentia by ΔиłĦ☼иצ ߀₡ʞ March 5, 2020

Megalodonna 

Noun. A fair and beautiful woman who, much like the megalodon shark, is larger than most of her kind.

Megalodon is to shark, as megalodonna is to belladonna.

Otis: You think Darcy will be at the party? I've wanted to hook up with her for a long time.

Gunther: Really? She weighs, like, three of you.

Otis: I know. Oh, how I long for my plump MEGALODONNA.

Megalodonna by AllTheGoodNamsAreTaken June 27, 2014