“Presumably”.. so did it happen or not!

just take the dog out with some headphones and don't look simple. It's not great entertainment, but shit happens what you gonna do

Kudos to your parents for still having an active sex life after all those years! Noise canceling headphones are not too expensive. Cheaper than a new comforter or mattress.

Are you sure it was pee or was he aroused by the sounds and smells of other mammals copulating?

Seriously, this was so a you deserved it. Just don't look, fire up your iPod or Google Play music, put some headphones on and take your dog out... simple, no?

Were they doing it on the stairs? Good for them for having a healthy relationship, and good for you. Now quit being wuss and take your dog out

If it happens again, you take a deep breath, square your shoulders and walk out with the dog. If they are at it, act as if it's perfectly normal and compliment either: your dads backside/mums flexability or both of them for their excellent example of good married life as you go past. As you get to the door, casually throw over your shoulder that if this happens again, the pics are going on the internet.

just grow up and take the dog out. sex is natural and how everyone got here. just don't look. if you want to be careful announce your coming down.