Tunsel 

Someone who "sucks up" but not in a blatant way. Not a total tool, but leaning towards it.

Haha, i cant believe he gave you his lunch so willingly, such a tunsel.

Tunsel by Willyvilly July 23, 2007

Tunneling 

The act of only chasing one survivor in Dead By Daylight the entire game and instantly going to them when they get unhooked

“Ugh the killer is tunneling me can you take a hit?”

Tunneling by Internetsavior September 22, 2019

Tunnel Rats 

U.S. military personnel whose job is to crawl through enemy tunnels in search of the Viet Congs.

The tunnel rats were American and Australian infantry soldiers whose task was to carry out underground search and destroy missions during the Vietnam War. The Viet Cong guerrillas had built a complex system of tunnels in which they hid themselves and their weapons when they were under attacks. They were extremely dangerous, with numerous booby traps and enemies lying in wait.

Tunnel Rats by Dancing with Fire June 30, 2011

Tunnel vision 

the loss of peripheral sight, which makes it look like one’s vision is restricted to a narrow tube. It represents an individual focusing solely on one goal and suggests purposeful ignorance of evidence contradicting their pursuit of the goal.

My mama told me: "Boy, make a decision!"
Right now I gotta keep a tunnel vision
-Kodak

Tunnel vision by Elite Dictionary March 16, 2017

tunnel brother 

A guy who has banged the same girl you have

Oh, you banged Sally? You know that you and Kyle are tunnel brothers now, right?

tunnel brother by caveman pleasures September 2, 2013

Texas tunnel 

A Texas tunnel is a stretched out vaginal or anal region.

After multiple babies, Susie lamented that she now had a Texas tunnel where her vagina had been.

Texas tunnel by I, Wreckerrr October 15, 2016

tunnel burn 

when you eat something spicy and afterwards you take a firey shit and it feels like a tunnel of fire is coming out of your ass.

yo dawg I just had some spicy ass noodles and had some crazy tunnel burn on the toilet.

tunnel burn by chou101 June 24, 2020