In her warm pussy.

Grinning as you do so, you attempt to spear the growlithe with your cock a second time. You make it farther than you did before, but its still rough going. You only get a couple inches in before you have to pull back and thrust further. Tightening your grip, you plunge into Gina, and after a few attempts you manage to get deeper. But oddly, you feel something blocking you from penetrating any further.

Not giving it much thought, you hammer in your cock with a powerful thrust. Gina tenses and you hear her cry out in pain. Looking down to your cock you see a light coating of blood on your dick. This growlithe was a virgin! Your cock was literally the first that had ever been inside Gina's pussy.

Loving the thought of being her first, you hammer home the rest of your cock before going to work. Taking a firm hold of her hips, you slam into her like a madman. At first, her expression is one of pain. But gradually, her cries of pain start to turn to pleasure. All you can hope is that she's too distracted by her first time to put up any real resistance. Maybe there was something you could do to facilitate that?