Sex-doll's greatest pleasure

You're a futanari and you and your two futanari friends have found a sex-doll in pretty mint-condition, due to a phenomenon known as the Futa-lust-wave, All three of you are horny as all hell, so you decide to share it. I mean, it has 3 holes right. You can also decide if you want to be the doll, if you want to ;)