Aunt Susan and Dad !!!??

My parents have no sense of shame or modesty. I can't remember the number of time I caught them fucking on their bed, the door of their room wide open.

The scene is a familiar one, mom is straddling dad, bouncing on his cock.

Except for the little grinning devil on her hip and the red rose tattooed on her ass.

IT'S NOT MOM !!! IT'S AUNT SUSAN HER TWIN SISTER, FUCKING WITH DAD.

Dad is supposed to be on a business trip to Japan repairing a nuclear powerplant.

"Mike ! Your plane was supposed to land at 9pm! And you Suzy you were supposed to wait for me to jump his bones, he's my husband." Screams my mom.

Wait! What? Wait for her to....

Wait a minute those two are fucking each others, she knows it, she’s just pissed about not being here. I need explanations.

"Sorry honey with their squiggly writing I read pm instead of am. Suzy went to pick me up so I could surprise you at breakfast at her home." He says. "After the 15 hours flight and three weeks without any for her, we were both rather horny, thing went downhill from there."

Wait he left three weeks ago so they had sex there too?

"You look perplexed sweetie. You see as twin me and Susan shared everything when we where young. We had trouble getting serious boyfriends because we couldn't share. Until we met Mike, he dated both of us at once for years and it was perfect." She says.

" But he loved you more and chose you in the end , you got married." I tell.

"Well kinda. He loves us both but he had to marry one of us. So we made a deal, no birth control or condoms for 3 months and ge would marry the first one to get pregnant. I won and 9 month later you were there. But we couldn’t keep Susan out of the loop so during these years he kept making love to both of us." she adds.

"I though you figured it all out sweetie, you caught us having sex 2 or 3 times already. " adds Susan.

Some of the time I saw mom and dad fucking, it was not mom but her twin with sheets and in the dark I didn't notice it.

During all this exchange, they didn't stop, aunt Susan still impaled on my dad's dick.