nautilus 

to work out in a gym (eponymously after the Nautilus chain of fitness centers)

"You know, those mail bags, they get mighty heavy. I uh, I
Nautilus, of course. (puffs out his chest)."

Newman in Seinfeld Ep. 132 The Bottle Deposit

nautilus by Jerry Newman January 3, 2009

The Nautilus 

A kiss under the water, named after the first submarine "The Nautilus"

Ryan: Hey you wanna go under the water and explore The Nautilus?

Hannah: Sure!

The Nautilus by classicrocker192 July 13, 2009

reverse nautilus 

N. An exit maneuver that is performed after walking into an awkward or otherwise undesirable situation. It consists of walking or scuffling backwards while undulating the arms along the anterior region of the transverse plane, imitating the way the chambered nautilus swims. A person performing the reverse nautilus will try to forget what has been seen.

V. To do the reverse nautilus.

N. When I saw my little brother masturbating, I did the reverse nautilus.

V. Last night I ran into my roommate having sex, and I promptly reverse nautilused out of there.

reverse nautilus by assmurderer January 11, 2010

Nautious 

When you're feeling sick but you're also a dumbass who can't spell.

Steve: Oh bro i'm feeling really nautious.

Dan: Shut up steve, you can't spell

Nautious by lwttz June 11, 2018

Natilus 

A misspelling for the word "Nautilus".

Do you drive a Lincoln Natilus?

Natilus by a person on a MacBook March 26, 2023

Nautilusness 

The feeling of pure rage when you are absolutely proven wrong but there is nothing you can say or do about it.

I was arguing with my friend and he caught me in a lie, completely undid every argument I had made. I wanted to fucking exploded, i felt something close to nautilusness in those moments.

Nautilusness by TK448 June 1, 2022