no, it's not crazy, a majority of girls have never squirted, a lot of them also think it's a complete myth, along with some of my friends. They believe that if they've never done it, it can't happen. My sex partners and i know that that isn't true.
Oh, and if you've seen those nasty porns with the squirting girls, that is COMPLETELY fake. they are just holding water in there or something.
usually when i do the guys like omg you came and there will be a little liquid on my sheet about 6-7 inches in diameter. And i know this sounds gross but when i first started to be able to do it, i thought i was actually peeing, and when i was alone i leant over and smelt it. it was completely odorless. i even made sure i peed before sex so i could reassure myself that I wasn't leaking pee out...lol also, i began laying towels on my bed because things can get a little messy, which is a downside to it. The most I can say is this happens when your g-spot is heavily stimulated, i find that it happens when the guy is thrusting very fast and hard, and i constrict my vaginal wall. same with fingering, as the speed of his fingers increase i increase the tightness of my wall, and voila! i've created liquid from "somewhere" (lol), and will have one of the most intense orgasms ever. The liquid appears clear on you, but on black bed sheets it's a milky white color. you WILL need to wash your bedsheets ALOT if you learn to do this. lol. Note that i cannot do this everytime, like when a guy is being hasty and i'm not turned on enough it wont happen (imagine that!) on some good nights i've squirted up to 5 times.
i've had a lot of guys very pleased that they could make me do that.
just experiment with a vibrator, and try to make yourself do it first. Figure out how and when to constrict your muscles.. practice. my first time squirting was with a vibrator...once you figure it out and know the master plan, you can try and (try again, lol) on a guy. He will be amazed...and, you'll love it too.