These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Genius Bonus: Lita's DnD references are slightly off, clearly as an in-joke for readers who actually play the game. For example, most of the named equipment is impossible in a non-epic game.
In one comic, derivatives are used. The answer given by Alex is right. For even more interest, the teacher is setting up a "Maximum/Minimum" question, which the formula actually sets up a maximum for.
Recently, Alex went into a WOW expy world and summoned a demon. Not only was the demon a attractive woman (specifically stated as impossible to create), but said demon then makes out with Alex for what is hinted as a long time. Bonus points? Alex says that if she was going to do that again, to give her a heads up.
Possibly has something to do with the fact that she used to be a guy and has a few lingering feelings from that time?