Mario's Tunnel Of Doom 

A very unusual cave created by a mysterious floating head, no records have been written about this cave nor has anyone escaped it for those who have entered it. However, some believe that the cave was emerged in March 8, 1991. Its location is unknown but some say that the only way to find the cave is by entering the Bermuda triangle. No one really knows what is in the cave or where it really came from...

I wouldn't go in Mario's Tunnel Of Doom if I were you...

Mario's Tunnel Of Doom by Luigis January 4, 2017

MARIO'S TUNNEL OF A DOOM 

The place you go to when you piss off Mario's floating head.

OOOH, MARIO'S TUNNEL OF A DOOM! VERY SCARY!

MARIO'S TUNNEL OF A DOOM by Someone of non-imporance August 31, 2013

Did you know that there's a tunnel under Ocean Blvd 

The ridiculously long name of Lana Del Rey's upcoming 9th studio album, out March 10, 2023.

Stream Lana's new song Did you know that there's a tunnel under Ocean Blvd!

Did you know that there's a tunnel under Ocean Blvd by olivia bensonola December 7, 2022

Tunnel Snakes

The Tunnel Snakes were a small gang that ruled Vault 101 in the video game Fallout 3

"Tunnel Snakes rule!"

Tunnel Snakes by Slapmych33ks July 20, 2015

The Tunnel Snakes

Tunnel Snakes Rule! We're The Tunnel Snakes!

Tunnel Snakes Rule! We're The Tunnel Snakes. That's us and we rule!

The Tunnel Snakes by MsLi December 12, 2010

Beerpal-tunnel syndrome 

a medical condition that affects your dominant drinking arm

He's drinking with his left hand because his right arm has beerpal-tunnel syndrome

Beerpal-tunnel syndrome by jonesberger October 8, 2018

Car Pool Tunnel Syndrome 

When three or more people are riding in a car and they drive through a tunnel, all the windows are rolled down and everyone screams out the windows all the way through the tunnel. Their shrieking reverberates off the walls of the tunnel causing quite a ruckus.

Bum #1: Listen to those damn fools yelling out their windows!
Bum#2: They can't help it, Earl. I think they got that disease.
Bum #1: What disease, Fred?
Bum #2: That there Car Pool Tunnel Syndrome.
Bum #1: You're a fucking idiot, Fred.

Car Pool Tunnel Syndrome by theinstigator September 22, 2016