I thnk some chicks just know how to get themselves off quick and easy and that for them is intense. For me jerkin off is so routine and is almost like one of those things ya know, get up, rub one out, shower, shave etc. It's definatly a much more intense orgasm when you've been teased / forplay for a while and u have you explode inside your partner, nothing beats that. I'm sure most girls would also tend to agree.