JCB 

The expression comes from the JCB company, a UK-based manufacturer of heavy equipment founded by Joseph Cyril Bamford in 1945. It's like saying, "You'd need a bulldozer to dig yourself out of this."

From Ian Rankin's "Resurrection Men," an Inspector Rebus novel, Chapter 16:

"Fuck me?" Claverhouse was shaking his head. "You've got it all wrong, Rebus. It's you the boys in Barlinnie will be telling to bend over. Because if I can tie you to Cafferty and his operation, so help me I'll send you so far down they'll need a JCB to find you."

JCB by RS Gordon October 16, 2007

JCB 

when a person is cornered and needs to be metaphorically "dug out" of a situation

You need a JCB to get out of this

JCB by Naman Ali September 2, 2003

JCB 

JCB is a abbreviation of the name Jacob it is one of the best nicknames in the game

Ayyyy JCB how was work

JCB by JCB296 April 23, 2021

JCB 

Abbreviation for Judgemental Controlling Bitch / Bastard

My sister's trying to get me to do exactly what she wants, she's such a bloody JCB

JCB by potatan December 28, 2021

jcb academy 

A posh school, full of not so posh briefcase wankers that wear the longest fucking shit flickers you’ve ever seen.

Jcb academy building engineers and business leaders of the future

jcb academy by Donnameat December 15, 2018

JCB starter buttons 

"JCB starter buttons" - A woman's nipples resembling the control to start the engine on a vehicle manufactured by JCB

*Exclamations emitting from a building site probably around the Toombridge/Limavady area of Ireland* 'Look at thon!' ..'Aye JCB starter buttons sir'

JCB starter buttons by Robotkev August 20, 2013

JCB starter buttons 

used in rural Ireland to describe a woman's nipples if large

she has nipples on her like JCB starter buttons

JCB starter buttons by legques September 19, 2018