Gallifrey
A loud expression of happiness that makes you want to punch someone because it’s so annoying.
'Gallifrey! That’s what I said when I won the lottery. My neighbor said I was too loud.'
'I heard Gallifrey in the middle of the night and I was so annoyed I threw my sock at the wall.'
'My dog said Gallifrey when he got a treat. I think he’s trying to be cool.'