2若能自控还要铅笔做甚
[2 ruò néng zì kòng hái yào qiān bĭ zuò shèn]
'If One Can Control Himself, Is the Pencil Needed Then?' Here 2 refers colloquially to 'silly', and it sarcastically mocks those lacking in self-control while depending on things trivially, like using a pencil.