Chuffed is a Northern word for "happy" really happy. So "Chuffed Out" can literally mean happy beyond comprehension.
It also has a darker meaning: knackered, beyond caring, blown away.
1/ I'd just bought a new Porsche and was completely chuffed out.
2/ We had been in the pub for hours; Dave was the worst for wear, he was completely chuffed out.
Someone who chases a girl to the get put down at the end off it
Bro your sich a chuffed chaser.
The sexual act of penetrating someone's anal sphincter whilst the recipient vomits.
partnered with the similar act of Vom-Duffing
"whilst she bent over to throw up. He took down her trousers and to her pleasure being Vom-Chuffing her"