Anal rail gun 

The act of suppositing a large, mortar shaped metal butt plug into the anus, then nipping down to your local hospital for your MRI scan.
The magnetic resonance has been known to instantly accelerate the supposited metal object up to the speed of sound and deposit it elsewhere in the torso.

"Hey Arthur, did your wifes hospital appointment get in the way of your sexy weekend away?"
"On the contrary Jim, we were banging like the shit house door when the plagues in town. Hospital appointment looming and with her voyeuristic ambition, things got really sexy and I coaxed her into an anal rail gun.

Anal rail gun by ChewMyR00t May 11, 2023

anal rail gun 

To wear,insert,or make use of a metallic Buttplug, while in an MRE machine.

Step 1. Wear a buttplug with a metallic core, or just wear a fully metal buttplug in your rectum

Step 2. Schedule an MRI or have a Walk-in MRI at your local hospital. While still wearing the Buttplug

Step 3. Lay on the MRI table and let nature takes it course.

As soon as the MRI machine is turned on, the buttplug will shoot at the speed of sound itself into your anal cavity, through it, and into your chest cavity.

Chance of survival is Low, but not impossible.

"Man, That Anal Rail Gun was intense! I gotta remember to take out my plug next time!"

anal rail gun by The Dab Pad December 7, 2024

anal railgun

The result of entering an MRI machine with a metal butt plug inserted. A perfect anal railgun launches out of the subject's anus at near terminal velocity. Internal/reverse launches, also known as "misfires", usually result in explosive death or in some cases, extreme pleasure.

"I was just starting Mr. Sawatzky's MRI when he started screaming and launched an anal railgun across the room that embedded itself in the concrete wall!"

"That's crazy! I'm glad all mine are silicone..Did he survive?"
"N....wait what?"

anal railgun by DMeaner February 20, 2024