I don't give a holy fuck
A swear that sounds like it came from a church but it's really just a mean way of telling someone to shut up. Use it when someone won't stop talking about how good they are at everything.
'I don't give a holy fuck if you're the president, I still hate your speeches.'
'I don't give a holy fuck if you're the best at video games, I beat you in the first level.'
'I don't give a holy fuck if you got the last slice of pizza, I got the crust.'