You’d think the editing process on textbooks would be intense! But judging by all of these WTF things found in textbooks, I’d say either it’s not as rigorous a process as one might expect or that every single textbook editor is just waiting to wreak some havoc with their WTF hijinks. I like to think the later. It sounds kind of like a boring job, but if you can create one of the following WTF moments, it must make it all worth it! Here’s a look at 20 hilarious WTF textbook moments!