I don't give a holy fuck
A swear that sounds like it's from a church but it's really just a mean way of saying 'I don't care.' It's like telling someone to go to hell but with more holy drama and less actual going to hell.
'I don't give a holy fuck if you're the best at everything, I'm still the best at everything else.'
'I don't give a holy fuck if you're the most popular kid, I'm still the most snacky kid.'
'I don't give a holy fuck if you're the most annoying kid, I'm still the most snacky kid.'