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

Megalodon 

1. a prehistoric shark, that measured up to 12 metres in length.

2. an exceptionally mega impressive donn thing.

that is the most megalodon board I have ever ridden.

Megalodon by simon warren November 17, 2003

Megalodong

A penis that, when flaccid, touches the water of the toilet whilst the carrier is excreting.

Joe stuck his megalodong into the gloryhole.

Megalodong by TheMegaladong June 30, 2015

Megalodong

A gigantic huge dick

I here she likes Megalodongs

Megalodong by KatoArin October 10, 2022

Megalodon 

A huge, extreme or excellent Mafia boss.

Joe got shot because he owed money to the Megalodon.

"Hey, I can’t wait to see that new gangster film about the Megalodon."

She was both terrified and excited when the Megalodon asked her out for dinner.

"Joe, don't look that guy in the eyes!... he's the Megalodon."

The FBI finally managed to lock up the Megalodon... on TAX evasion.

Megalodon by Paulhully August 12, 2018

Megalodongus

A big fucking penis

Does Mark have Big Dick Energy? - Katie
Not just that, he has a nine incher megalodongus - Megan
Fuck - Katie

Megalodongus by Chemistryboy404 September 14, 2019

ultra megalodons

When something you dont like happens, and instead of saying "what the fuck" you say ultra megalodons.

"What the ultra megalodons"

ultra megalodons by Casey fitzweiner January 16, 2008