Her dad

There was a momentary haze that went over your eyes and caused you to blink a few times before it passed and you glanced over at your girlfriend who had a big smile on her face. "What happ..." you stopped, realizing that the voice from your mouth was definitely different. It was much lower in tone and pitch, a rich deep voice that you had heard many times in the past but didn't expect it to come from your own mouth. "You didn't..."

She nodded and laughed at the look on your face before she motioned for you to get up and check your reflection in the mirror. You did so and took in a good look at your girlfriend's father's face and body reflected to you. He was about 4 inches taller than you, standing at 6'5", and easily 4 pounds heavier, though that was due in part to his larger frame and broad chest, something that you often heard other girls and women talking about. His face was clean shaven but had a rough, almost rugged older man vibe that was definitely DILF material in some people's eyes.

"Hey, dad, nice to see you joining us..." she laughed again at the shocked expression on your face but as she got up to stand next to you, a glint appeared in her eyes, one that you knew she had planned something.

"What's the agenda?"

She patted you on the shoulder. "I want you to enjoy yourself today, babe...sorry, dad. You're too uptight, learn to relax and enjoy yourself. There's so many women here looking for a break and maybe even a romance. It can't hurt for you to play around."

Before you could say anything, she tapped you on the chest. "Best get dressed, breakfast is starting soon."