Here's another one for you. In this case, it wasn't so much what was said as it was the situation in general.

It was my first visit back to my hometown after having been away at college, and I was having a small get-together (at my father's house) with a handful of friends. At the behest of my buddy Mark, we were watching a film entitled "Jesus Christ: Vampire Hunter," while arguing about whether it was a good bad movie, or a bad bad movie.

You know what I mean.

Anyway, it was late at night and we were all seated in the living room, quietly bickering with one another about the content and execution of the film. We had promised to keep our voices down, because my father was doing his best to remain undisturbed until the following morning. Unbeknownst to us, he had taken a sleeping pill in order to help with that endeavor... and he experienced an odd side effect.

"Hey, guys," I heard my father say. We all looked up to see him standing there, stark naked, with his eyes fixed on the television.

"Uh," I started to reply, as each of my friends stared at me. "Hi there, Dad. Were we... were we being too loud?"

He scratched his head absentmindedly. "Can you turn the volume down a bit?"

"Sure," I answered, clicking a button on the remote. "Why don't you go back to bed?"

My father stared at the television for a moment longer. "Okay," he finally said. Despite his answer, he stayed there, completely still, apparently hypnotized by the images on the screen.

"Dad!" I said again. It seemed to be enough. With a slow, lumbering motion, he turned and walked back to his bedroom. We heard the door close, and my friends each breathed a sigh of relief.

The following morning, when I asked how my father had slept, he told me about having taken the pill.

"Aha," I replied. "That must be it, then."

"Must be what?" he asked.

I shrugged my shoulders. "Well, I mean, you came walking into the living room and told us to turn down the television."

"I did what?!" he exclaimed. "Oh, god... I was naked, wasn't I?"

He had absolutely no recollection of the previous night's events... but that didn't stop him from being embarrassed by them.

TL;DR: Dad dicks and bad flicks.