Unexpected Detour with Mom - Sex Stories

Unexpected Detour with Mom

... I notice Aunt Elizabeth glancing at me using the rearview mirror. She has a mischievous smile. I'm blushing so hard from embarrassment. The sound of clothes ruffling continues in the backseat, and when it stops, I hear them breathing quiet sighs of relief.

Fifteen minutes later, we pull into the front lot of Luke's apartment building. When we exit the van it's so obvious that they fucked. Luke is standing on wobbly legs, my mother looks frazzled with glowing skin. Aunt Elizabeth looks amused by the secret. Both of them give Luke a goodbye kiss, with mom's lips landing dangerously close to Luke's lips.

After...

The moment the front door closes, I turn to my mother and demand answers. We can hear Aunt Elizabeth driving away from our home as we get barefoot and step into the living room. Mom legit looks embarrassed but I'm persistent.

"You have to tell me," I say. "What was happening in the backseat?"

Mom has tired eyes as she's holding her travel bag. She pauses for a moment, thinks, looking for the right words to explain herself.

"On average, Luke ignores me unless I text him first. A typical adult son. Now I'm wondering if he'll emotionally push me away, or contact me often. I'm wondering if he'll visit me for sex. Yes, that's right, sex. We had sex in the backseat. Before that, I gave him fellatio in the afternoon."

"Why?"

"Because it's part of my research. I needed to know the effect of incest on young adults. I found out with you. I had to find out ...

... with Luke. My work is extremely important, I help so many people, and I acknowledge what I did today was unhealthy."

"So that's all this was? We're fucking experiments?"

"Please don't curse at me. Look, we'll continue this conversation tomorrow when your mood calms down, okay? Please know that I love you."

Mom ends the conversation and carries her travel bag to the bedroom. I stand in the living room trying to process all this, but how do I explain my contradictory feelings to her? How do I explain that she's the best orgasm I've ever experienced and I've been fantasizing about her like crazy?

I walk to her bedroom and hear the shower running in the bathroom. Her clothes are scattered on the bed. I walk toward the bathroom and see mom's panties on the floor. I pick them up, inspecting them, looking at the giant mess of cum my brother left.

The bathroom door is wide open and my mother is in the shower, curtains wide open. She crouches down to bring the shower head between her legs. I enter the bathroom to watch. She doesn't kick me out. Her legs are spread in my direction.

When I get closer, I watch mom fingering herself to get the globs of thick white cum out, then she sprays inside her hole for further cleaning. Her pink nipples are erect. I think it's because I'm watching her. When her pussy is clean she stands and washes her body after that sticky hot van ride.

"You can join me if you want," she says.

She didn't look at me, she probably thinks I'm ...