3 sentences

1. 别磨蹭了，我们快走吧。

   bié mó cèng le, wǒ​men kuài zǒu ba.

   Stop dawdling; let's go.

   Source: Dong Chinese Dictionary

2. 我今天去同事家蹭饭。

   wǒ jīn​tiān qù tóng​shì jiā cèng fàn.

   I'm going to a colleague's house for a free meal today.

   Source: Dong Chinese Dictionary

3. 他的车在墙上蹭了一下。

   tā de chē zài qiáng shàng cèng le yī xià.

   His car scraped against the wall.

   Source: Dong Chinese Dictionary