I thanx nada - A mean way to say you're not only saying no, but you're also

A mean way to say you're not only saying no, but you're also making fun of the person asking.

'Can I have a cookie?' 'I thanx nada, I'm eating your face for dessert.'

'Are you coming to the party?' 'I thanx nada, I'm already at the funeral.'

'Can I copy your homework?' 'I thanx nada, I'm copying your brain.'