Being very chuffed
or pleased with something or somebody.
Comes from the word 'pleased' which rhymes with 'cheddar cheese' which became 'cheddared'.
Brian was cheddared that all his friends had turned up for his birthday.
Steve receives an anonymous cheque for £3000: "Cheddared!!!".
When your hooking up with a girl and start jacking off... usually you turn slightly so she doesn't touch your penis by accident and catches you
I pulled a turning tim and jizzed all over her leg