Many amateur girls and first time porn sluts shy way from double penetration because it requires a professional amount of endurance that new girls just don't have yet.
The ultimate thrill for a horny chick is not just getting her moist muff filled, but having two dicks pounding her at once, for the wildest double penetration action.
Some girls think that taking it anally is as naughty as it gets, so imagine a kinky babe wanting a hard cock ravaging her wet pussy at the same time as another is pumping into her tight asshole.
However, double ending a girl by fucking her mouth and either her ass or pussy at the same time does still qualify as double penetration technically.
Will it be your turn to fuck her mouth? The key to enjoying double penetration is to move beyond petty jealousy and accept the fact that there are always plenty of holes available.