Cuppa comes from the phrase “cup of.” The implied (suggested) meaning is a cup of tea (because we love tea…sometimes stereotypes exist for a reason). The word “tea” is not actually needed. You only need to make it clear if it is a “cuppa” coffee or a “cuppa” something other than tea.
“Would you like a cuppa?”
“I’d love one. I’ll get the kettle on.”
In American English, “fag” is a derogatory (insulting or mean) term for someone who is gay. In British slang, however, it just means a cigarette.
“I’m going outside for a fag.”
When someone is cheeky, it means that they are being a little rude or disrespectful, but usually in a way that is funny and endearing (cute).
“That is a cheeky smile…are you up to something?”
“Did you just take the last biscuit? That was a bit cheeky!”
It can also be used if you are eating, drinking or doing something that you maybe should not or that is not good for you.
“I’m just going to have a cheeky burger on the way home.”
“Are you coming to the pub tonight?”
“On a Tuesday?! Well OK, just a few cheeky drinks.”
“Bants” is an abbreviation (shortened version) of “banter.” “Banter” means to joke or to exchange witty (quick and fun) remarks with others.
“I’m going to Nando’s for some bants with the lads.”
Knackered (or sometimes “ready for the knackers yard”) means that someone is extremely tired. This comes from “knacker,” which is an older word. It refers to a person who slaughters old worn-out horses who can no longer work.
“I’ve been up half of the night with the baby. I’m totally knackered.”
When someone is chuffed, they are very pleased or happy about something.
“I’m absolutely chuffed with my birthday present. Thanks!”