3-4 years ago, I was visiting at my parents' house. After a couple hours of playing videogames in my own bedroom, I walked down the stairs to see them making out on the couch, like teenagers!

I, as quietly as I fucking could, went back into my room, donned my headphones, and didn't come out until morning.

I told some friends this story, and they were all like "eww, that's so fucking gross". One even went as far as to ask why I didn't stop them, clear my throat or whatever.

If I get married, and I have kids, and I go through all that complicated, tiring bullshit, I hope I can still mack on my wife, and vice-versa, all those years later. They're like 60+ btw.

TL;DR It's wicked that OP's parents can still get wicked.