How do you fake an orgasm?

Question right there.

think of something that would lolz

Best not to.
First of all, many if not most women your age do not get O's during inter_course.
Second, if you fake it, how will the guy ever know what to do to give you one. (If you fake one just as the guy grabs your boob, that guy will only do that in the future. Guys are very direct. If xyz works once we will always do xyz.) Guys need GENTLE direction and nudges. We need help because we have no idea what pleases a woman. And if we do get a clue, we think that one thing works equally well on ALL women.
Hopefully your guy is mature enough that he understands that women don't always climax. (And also that an hour of activity is about 40 min. of ouch to the woman.)

I'll let someone else give you the techniques.

Good Luck!!

just moan as you would have sex lol or something pleasurable

Ok, thank you everyone.

What I don't understand is that guys sometimes think you are a robot and can be turned on and off just like that. Ugh!

How do you tell a guy that girls are not all like that?

ohplease, guys think that gals can be turned on and off because they’re guys and THAT'S HOW GUYS ARE! It's only after a long time do we realize that gals are not just prettier and softer, but that you are fundamentally different in your thoughts and biology - and I might add that you women fall into the same trap. It's a human failing.

If a guy doesn't climax EVERY time, he views that as a major fault unless there is something to explain it like an earthquake, a tsunami, or the building's on fire (but only if the fire is close). Put that with a man's desire to fix things (more on this later) and your men are trying to 'fix' the climax 'problem' that they think you have. We don't do it consciously, but we just feel that something is not right with the world and we try to solve it.

How do you as women let us know that there is no ‘problem’? Just tell us. But don’t expect us to believe you fully.

Good Luck!!