mechnanocal 

An incredibly small machine. A manmade device that operates on the molecular level.

He swallowed the mechnanocal pill to protect his skin against the harmful rays of the Martian sun.

mechnanocal by Vincent Jenkins August 30, 2008

Marvin's Marvelous Mechanical Museum 

A museum in Michigan which is dedicated to displaying a variety of animatronics and other coin-operated machines. It was originally owned by the late Marvin Yagoda, until he died just after New Year's of 2017, when ownership was transferred to his son, Jeremy Yagoda. Due to the COVID-19 pandemic, the museum was forced to shut down temporarily, until Michigan reaches Phase 5 of containment, and was faced with financial trouble due to maintenance on the machines, but thanks to a GoFundMe, they were able to remain afloat. Though Marvin died in 2017, he is attributed with the quotations "Wouldn’t the world be better off if we took nonsense more seriously?", and "Don’t use time or words carelessly; neither can be retrieved".

Furthermore, the "fabloo" band known as "Tally Hall" created an album named after Marvin's Marvelous Mechanical Museum, and Marvin himself appeared in an episode of the Tally Hall internet show

Person 1: I heard there's this one place with some sort of weird robots and stuff down on Orchard Lake Road, called Marvin's Marvelous Mechanical Museum. Anyone wanna come with me?

Person 2: Sure, I think I heard some neat stuff about it online

Marvin's Marvelous Mechanical Museum by Smegma Muncher July 12, 2021

Non-Mechanical Reproduction Simulation 

Sex in half-life 2. A Combine unit that has 100 sterilized credits gets a sex.

Overwatch: Reminder, 100 Sterilized credits qualifies for Non-Mechanical Reproduction Simulation.

Non-Mechanical Reproduction Simulation by CP-1788 April 28, 2021

Mechanical Stop 

The name given to a person's nose when, during a deep throat of a penis, it bottoms out on the pubic area befor the lips do.

"She could have choked down my entire length, but her mechanical stop left two inches of bare shaft visible."

Mechanical Stop by Greg T. James June 8, 2005

Mechanical Engineering 

n. The most hardcore and manly type of engineering known to man.

Business major: "What do you major in bro?"

MechE major: (in a deep booming manly voice)"Mechanical engineering."

Business major: *shits his pants out of awe and fear*

Mechanical Engineering by FYAM April 15, 2009

mechanical bull 

As your doing a girl doggy style and right when your about to cum say a different girls name, and hold on and try to keep your dick in her as long as long as possible.

My girlfriend broke up with me after I gave her a Mechanical Bull.

mechanical bull by TheFdupRUSSIAN July 24, 2011

mechanicalness 

The type of engineering that describes a well designed piece of equipment, engine or other mechanical device.

You love this thing because it's sheer mechanicalness

mechanicalness by Recycled Roadkill July 21, 2009