Dark Tranquility 

An excellent melodic death metal band hailing from Götenburg, Sweden. Along with At the Gates and In Flames, helped define what would become called "The Götenburg Sound," which was then copied by many crappy American bands.

Dark Tranquility's noteworthy albums:
The Gallery
Haven
The Mind's I

Dark Tranquility by Bjorn Turok December 20, 2007

Tranquility Base Hotel and Casino

A holiday resort on the moon.

Person 1: have you ever been to Tranquility Base Hotel and Casino?

Person 2: yeah they have a pretty good taqueria there, definitely four stars out of five

Tranquility Base Hotel and Casino by MarkSpeaking February 11, 2022

Tranquilifier 

A popular VALORANT player, known for his lurk plays that never work and being hardstuck gold 3.

"Bro Tranquilifier, wtf are you doing?"
"stfu kid"

Tranquilifier by sqish July 6, 2022

Reflection and tranquility room 

Restroom toilet pisser porcelain thrown crapper shitter break powder room bathroom stall publicbathroom dropping a deuce pissing shitting alone time

I will be back. I'm going to the reflection and tranquility room. "Why do you call the bathroom that"...reflection is what I achieve from the mirror, deep into my soul after the tranquility I've experienced from a full emptying of my guts".

Hey, I left you some lines in the reflection and tranquility room-: bruh you're the best!

Reflection and tranquility room by hardyanimal December 13, 2019

tranquility 

someone who desires peace and beauty...

The poor long for riches,
The rich long for heaven,
But the wise desire tranquility.

tranquility by aheyde1 September 18, 2005

Tranquilizer Tony 

Best ket in England eh.
Found at festivals but apparently is only visible to the k-holed eye.

"Tranquilizer Tony was at Kendal Calling and gave us stuff that sent us sideways."

"Tranquilizer Tony was at Kendal Calling and gave us stuff that sent us sideways."

Tranquilizer Tony by Tranquilizer Tony January 2, 2019

Facility Tranquility 

The desired period of solitude and quietness when in a public restroom enabling oneself to release the bowels uninterrupted and unfettered.

I couldn’t snap my deuce this morning until I got some facility tranquility. It was like grand central station in the shitter for ten minutes.

Facility Tranquility by Eaton Holgoode January 10, 2019