Drive her home the next morning.

The next morning, your wife heads off to run some errands, leaving you alone with Gemma in the house. Unfortunately Gemma's father is expecting her home, so you don't have too much time to enjoy yourself. After giving your wife a quick kiss goodbye at the front door, you bound up the stairs to the sound of the running shower in the upstairs bathroom. You push open the door to see a cascade of steaming hot water pouring down Gemma's naked rear, with the shining red heart buttplug reflecting in the light from between her ass. You've already stripped off by the time you step through the door, leaving a trail of clothing in the hallway, and step through the open shower door behind her. You slide your cock between her legs for a moment, rubbing the shaft up against her pussy, before slipping it inside her tight hole.

You press her entire body up against the glass wall of the shower, grabbing her hair in a ponytail and pushing her face hard up against it. The glass shudders with every thrust as you slam your cock deep, leaving yourself buried all the way inside for a few seconds between each thrust. Each lunge drives her onto the tips of her toes, and she groans at the apex of each one as the tip of your cock presses up hard against her cervix. Sufficiently warmed up, you flip her around and pick her up, fucking her against the glass wall. She wraps her legs around you, and the plug in her ass rattles loudly against the glass as you rail her to completion, flooding her pussy with a massive load. The two of you dry off and get dressed before you drive her home shortly after.