better dont try it because most female who do sex for fun is most likely a privately self aware girl who doesn't think themselves a slut or a hooker. that means that they dont think that you have any rights or power over them and get to decide what fun you want to enjoy without their consent. truthfully many girls does want to enjoy double penetration with 2 guys (most are just fling) but not too little of them regret it after its done and the embarassment of have to go to doctor to get checked for pain in pussy and asshole and have to tell the doctor that its because they were stupid to do it. most of them dont want the second man but i'll tell you a secret that many of them dont resent a second girl fuck them in the ass or pussy with a strap on