john tuckering 

When a guy/girl is flirting/dating with more than one guy/girl. usually cheating.

when i found out my boyfriend was john tuckering, i dumped his sorry butt.

john tuckering by shelbi June 7, 2007

tuckering 

The act of a man putting his penis between his legs to create the mangina. Except for extreme cases, tuckering is absolutely prohibited on a normal basis. Tuckering is usually only permitted in times of dire need, such as when a butch or sheman is coming on to you in a bar/club.

Buffalo Bill enjoyed tuckering his penis in "The Silence of the Lambs."

tuckering by Ross Sargent December 11, 2005

steam tunnelling

The act of hot-boxing a partner's anus

Bitch was so fugly, I had to go steam tunnelling before I could fuck her.

steam tunnelling by Christina Farah February 3, 2007

Quantum Tunnelling 

An inter-spacial sex manoeuvre whereby a moist, warm hole is penetrated with enough irrepressible force from a cherry rocket to break through a seemingly impenetrable barrier.

Susan: “Thanks for the Quantum Tunnelling Kenneth, now I have to stitch it back together!”

Quantum Tunnelling by Soxandsandlesmadeforspeed June 21, 2018

Muckelling 

When someone motorboats someone elses Balls with their tounge out.

She gives a great Muckelling.

Muckelling by SeudoJoe March 27, 2009

Tucheling 

When you arrive on a scene that is up Shitscreek and proceed to bring glory in unexpectedly

The company was on fire till the new chairman came in tucheling.

Chelsea weren't expected to win the UCL but Tuchel came in Tucheling

Tucheling by TuffMbassador May 30, 2021

Tucker Tunnelling 

Shoving a fleshlight in a man's ass and then fucking them. As to not be gay whilst having fun the the homies.

Jim-"Me and the boys where doing some Tucker Tunnelling last night"
Geoff-"And you didn't invite me?"

Tucker Tunnelling by TheGasMan69 April 1, 2021