Plenty.

There she was, your mother, held in the arms of a man. That man, though, you had no clue who it was, especially seeing as his face was buried in your mom's tits. It wasn't exactly like this was a 'secretive quicky' either. You could see your dad in the living room, watching a show, with a clear line of sight of his wife getting fucked. You looked your dad over, checking his face for reactions... But there was nothing out of the ordinary. You went over and said "Hey dad, whose that guy?"

"Oh, hey son!" He'd say with a smile. "I've no clue who that guy is. He stopped by just today, asked if he could come inside. I said sure and not a minute later he has your mother wrapped up in his arms. They've been going for quite a while now. You planning on going anywhere?"

"I hadn't thought of anything, uh... Do you need me to, like... do something for you?" You asked.

"Well if you could head to the store for a bit and pick up some skittles or some thing sweet to drink, that would be nice. It's warm out today, so if you want to go there without pants on, I might recommend it. Just try not to be too late. Don't want to worry something happened."

You nodded, pretending everything was cool. "Sure, I'll uh... I'll go get something for you. I'll be back soon, dad."

"Take care." He'd say.

As you stepped away from the scene, you couldn't hardly wrap your head around it. Your mother would NEVER fuck another man like this... unless something really changed. Hell, your dad ACKNOWLEDGED it like this was an everyday thing.

And... honestly, your mother was kind of hot without her clothes on. And the way she moaned was like a siren's call. When you came home, maybe you need to see for yourself how good she feels? Or was that just not your thing?