Why not, she's already dead anyway

You've been alone for sooo long. No sex, no interaction, hell, you haven't watched porn since you stopped using the generator (turns out using loud machinery when your house is surrounded by feral ghouls is a bad idea). You can't help yourself, keeping your eyes glued to the peephole as the two undead studs dive onto the poor woman. More of them show up from the edge of your field of view, all dead set on getting their dick wet.

They tear her clothes apart with terrifying ease. Zombies don't give a fuck about foreplay, and the first one plunges into her less than a minute after reaching her. His large cock slips in easily, and he pounds her with the energy of a wild horny hog.

Her screams seem to annoy the second zombies, because he shuts her up by shoving his huge ballsack between her lips.

More zombies surround her, and she soon has dicks in every hole and in each hand. They use her as a sextoy, and there's nothing she can do against it.

You gasps upon realizing that you're touching yourself. Your dick feels rock solid in your hand. You know you should feel bad for doing this, but that doesn't necessarily means that you do.