I have been... forgotten

My science teacher forgot me again XP  this is about, the third or fourth time he's forgotten about me.  I might as well care around a polar bear and call myself Canada...  At this rate, I'm kinda starting to feel a bit like him.  But really, it's just my science teacher.  This time, he forgot that I haven't presented yet.  Its a little bit understandable because I had switched places with another group and he said he had already crossed my name off.  But if that's the case, why didn't he just rewrite it?  Idk, I'm not angry, just a little hurt.  Like a little little.  Like, somebody just flicked me on my arm kind of hurt.  Well, idk how much that hurts to you but not much to me.  In other words, I still have to present and now it's more of an annoyed feeling than a nervous feeling.  Hopefully everything goes well...