说你2b简直侮辱了铅笔
[shuō nĭ 2b jiăn zhí wŭ rŭ le qiān bĭ]
It's a witty retort, literally meaning 'saying you’re stupid actually offends pencils'. '2b' sounds similar to an expletive in Chinese and can also mean pencil grades 2B. Here, it sarcastically comments that describing someone in derogatory terms degrades the pencil more than the person described.