A bag of dirt
Having secret sex in either your or your partner’s grandparents house is like sneaking cookies from the cookie jar. It’s fun. It’s also super risky. You might get caught.
My mom caught me having secret sex at my grandpa’s house. She was not happy.
My dad had secret sex at my grandma’s house. It was awkward.
I had secret sex at my partner’s grandpa’s house. He was there.