gafmenot
This is your way of telling someone to stop bugging you about something you don't even half-decently care about. It’s like throwing a tantrum but with more attitude.
'You're going to the party?' 'Gafmenot. I'd rather watch paint dry.'
'Your mom called.' 'Gafmenot. I've got better things to do than listen to your mom's drama.'
'You're going to be late for school.' 'Gafmenot. I'll be late for life, why not?'