44.

I was the first person back from lunch today (my 4th period class is split in half by lunch).

I was eating a dark chocolate at my desk when the door peeked open.

"She's in there," I heard someone whisper.

Then, as quietly as possible, the door crept open, and two boys ducked for cover behind the first row of desks.  They proceeded to army crawl to the front of the room and avoid eye contact, holding objects in front of their faces or just staring off into space.

The next line is not a joke.

They were pretending to be invisible.

I teach eighth grade.