aiyah, just use Infernal Affairs famous dialogue
You : 'gei wo yi ge ji hui, wo xiang zhuo ge hao ren'
Mum : 'zhen me gei ni ji hui ?'
You : 'yi qian wo mei de xuan ze, xian zai wo xiang zhuo ge hao
ren'
Mum : 'hmmm...hao ah, qu gen ni baba shuo, kan ta rang bu rang ni
zhuo hao ren'
You : 'na jiu shi yao wo si....'
Mum : 'dui bu qi, wo shi ni mama'