What are the jokes caused by typos?

In physics class, the teacher asked Amin to print a report on free fall. Amin accidentally wrote that birds can be naked freely.

Once, a student in the class wrote in his composition: "I was walking on the road, and suddenly a pile of cow dung appeared on the road. I was shocked." After reading it, the teacher approved: "massive, massive."

A colleague sent a WeChat to his girlfriend and typed the word "OK". I didn't expect it to be "shit", and it was not good in an instant.

The monitor instructed us to pour the sewage, and everyone worked hard. No one dared to drink (rest). Finally, we were so tired that we drank (rested) secretly.