In rhyming Cockney:
Christmas crackers = knackers (testicles)
Christmas crackered - knackered (worn out, exhausted, broken, etc)
Click on the link below for more info
Christmas or cream crackers is rhyming slang for knackers (testes) eg the ball hit me right in the Christmas crackers.
Christmas Crackered (not crackers) is rhyming slang for knackered (or tired)
Christmas crackers is a cockney rhyming slang for the testicles of males. This is also a component their reproductive and endocrine system.
Testicles (knackers).
A Cockney rhyming slang for Trouble is Barney Rubble.
In Cockney slang, "trouble" is used as a slang term for "wife".
Slice pan is rhyming slang for van.
China Plate is Cockney slang for Mate
In Cockney rhyming slang - apples means 'stairs'.Read more at:apples-rhyming-slang
In Cockney Rhyming Slang, the slang for milk is Kilroy Silk, "Gotta av a drop'a Kilroy on me Cornflakes"
In Cockney Rhyming Slang, the slang for mess is Elliot Ness, 'Blimy young Peter's bedroom is in a right elliot'
"Little" in Cockney rhyming slang is often referred to as "dicky bird".
Tea
Cockney rhyming slang is believed to have originated in the mid-19th century among the working-class population in the East End of London, primarily among market traders and street sellers. It was a way for them to communicate without being understood by outsiders or authorities.