Katherine Spengler has been a proper woman her whole life. She was always organized, punctual and well spoken. She's like the perfect mother to Egon Spengler and the perfect housewife to her late husband. Now that she is widowed, she's filling a lot of sexual frustration. I mean, for a woman in her early 50's with the body and sex drive of a woman in their early 30's. All she could do is masturbate when she didn't have anything else to do.

One day, while packing to go visit her son in New York, she goes through her closet and finds the vibrator that she had misplaced. Before she decided to pack it in her suitcase, she uses it to bring herself to an orgasm before packing it away in her suitcase.

Let's just describe Egon's mom, physically. Blue eyes, short blonde hair and a proportionate ass that filled everything she owned. It was Peter who once referred her as a MILF when he and Egon were still college students.

The next day, she arrives in New York City to visit her son and his friends. Egon is happy to see her and gives her a hug.

Egon: How was your flight, mom?

Kathy: It was fine, dear.

Egon: Anything I can do for you? Like, can I help you unpack your suitcase?

Kathy: Why, thank you dear.

Peter makes a comment.

Peter: A real momma's boy, aren't you?

Winston elbows him in the ribs.

Egon: Thank you, Winston.

Then Egon leaves the room with his mom. What Kathrine forgot was when Egon opened her suitcase in the spare bedroom, Egon sees the vibrator and blushes.

Egon: Mom, really?

Kathrine blushes too, cause it's her son that found it.

Kathy: Oh, my. I completely forgot about that.

Egon face palms as his mom continues to explain.

Kathy: I've been really lonely since your father died and I still have desires.

Egon: Mom, please stop explaining.

As she puts away her clothes, Egon has the nerve to check her out. He didn't want to admit, but he secretly wanted to have sex with his own mother since he turned eighteen. His thoughts accidentally escape him.

Egon: I just love that ass.

Egon then covers his mouth when his mom turns around.

Kathy: Excuse me?

Egon: Nothing, mom. I was thinking about Janine.

Egon lies. Guess he really likes older women.

Kathy: Sure, you were. Anything you wanna tell me? I can always tell when you're lying.

Egon: Mom, I think you have a perfectly round ass and I wish to fuck you senseless. There, I said it.

Then Egon hides his face in shame.

Kathy: How long have you had these thoughts, Egon?

Egon: Since I was eighteen. It was when I accidentally saw you and dad having sex and it was a position where I saw you completely naked.

Then Katherine gets a thought.

Kathy: I bet you like to have me in that position, wouldn't you?

Egon: Right now?

Egon blushes. She reaches down and grabs his crotch through his jeans, only to find him surprisingly hard.

Kathy: I bet you're a big boy, aren't you? Well-endowed?

Egon: Mom, please.

This all too much for Egon, so he freaks out and leaves the room. Kathrine picks up the vibrator from suitcase and decides to masturbate to her son tonight. The next morning, Egon goes into the living room and finds his mother wearing a silky black robe while he's wearing his pajamas.

Kathy: Morning, sleepy head. I got up early and made breakfast for you and the boys.

Egon: That's nice of you, mom. Thank you.

When Kathrine stood up to approach her son, Egon notices how short her robe is and the fact that he could see her lacy panties. The other Ghostbusters happen to walk in. Peter makes a comment.

Peter: Damn, Mrs Spengler. You're a MILF.

Egon: (embarrassed) Peter, please.

Kathy: I made breakfast for you all.

Ray: Thanks, Mrs Spengler.

Egon follows his friends into the kitchen.

Peter: Damn, Egon. How long will your mom be here again? Cause I'll never get tired of seeing her dress like a desperate housewife.

Egon: Peter, please shut up.

Peter: I wonder if she likes younger guys.

Egon: Peter, my mother is off limits to you. Understand.

Peter: Yeah, sure. Whatever you say.

Winston: Peter, what he's trying to say is that he wants you to treat her as if she was your own mother.

Egon: Exactly. Thank you, Winston.

Just after the Ghostbusters had their breakfast, Egon decided to check up on his mom. This time, she's properly dressed and subbing as a secretary on Janine's day off.

Egon: Mom, I just wanted to tell you that you look amazing today. I mean, this morning, just what you were wearing was also incredible.

Kathy: I have an amazing ass, don't I? I mean, it's the one thing your father enjoyed most in the bedroom.

Egon leans over the desk.

Egon: Mom, I'm almost thirty-four and I never had sex. I think my first time should be with you.

Kathy: Now I know why you're so sexually frustrated. In due time, Egon.

Then Kathrine looks down and notices the growing bulge in Egon's jeans. She could almost make an outline of his cock. She gets up and approaches her son, then grabs his crotch, making him moan.

Kathy: I wanna know how big it is.

Egon: Ten inches.

Kathy: Egon, I will rock your world.

Egon just leaned forward and kissed his own mother on the mouth. His tongue parted her lips and into her mouth. He French kissed her, but that did not stop Kathrine from massaging his cock through his jeans.

Kathy: Take off your pants. I wanna see your cock.

She says as she starts undoing the front of her blouse and revealing that she isn't wearing a bra. Egon looks around before undoing his zipper and then pulling his pants down halfway, revealing that he was going commando. She licks her lips.

Kathy: Your cock looks so delicious.

She firmly gripped his shaft. She gets on her knees and puts his veiny cock in her mouth.

Egon: (moans) Oh, mom.

The taste of his salty precum made her wet enough to soak through her panties. She worked his sensitive cockhead with good suction and looked up at her son.

Egon: (moans) Oh, fuck.

Egon says as his mom deepthroats most of his cock.

Egon: I think I'm gonna cum.

Freeing her mouth and gasping for air, she makes a comment.

Kathy: Not yet, my son.

She lightly bit her son's shaft and squeezed the top of his balls to prevent him from climaxing.

Kathy: It's time to lose your virginity.

Kathy takes Egon to Peter's office, where there's a couch. Egon lays back on the couch and watches his mom strip completely naked in front of him. For a fifty-two year old woman, her body looks pretty youthful, he thought. She straddles his lap. Egon first reacted by reaching up and caressing his mom's breasts. He brings his head down to lick her nipples, which made her hot juices run down his shaft and onto his balls. Overwhelmed by eroticism of the moment, he moved his right hand behind her head and brings her closer for a deep, passionate tongue kiss.

While their tongues wrestled desperately, the motion of her hips picked up a notch, nearly sending Egon over the edge. She broke the kiss and moved her head down to his neck and bites hard enough to stop him from climaxing. She whispers in his ear.

Kathy: I love you, Egon.

Egon: I love you too, mom.

Egon says, putting his hands on her ass and pressing them down to thrust up into her.

Kathy: That's right, Egon. Fuck me.

With her right hand, she pressed down on Egon's chest to regain control of the stimulation and grind on him once again. A couple of minutes passed and Egon's moans get louder. She pressed he hips down and stayed motionless to prevent him from coming. From a distance, the other Ghostbusters had come down and have a pretty good view of what's going on in Peter's office.

Ray: Is Egon really having sex with his mom?

Winston: Watching them just doesn't feel right.

Peter: Shhh! You'll ruin the moment.

Back in Peter's office, Egon starts slapping his mother's ass.

Kathy: (moans) Fuck, yes. Do it again.

Egon slaps his mom's ass again. Peter makes a comment from the other room.

Peter: I wish I could get in on the action. I'd love to have the ass bouncing up and down on my cock.

Ray: Then why don't you go over there and ask her if she needs an extra hand.

Peter: That's stupid, Ray.

Winston: No, it isn't. You're stupid if you don't go over there.

Peter slowly walks over to the action and clears his throat.

Peter: Excuse me, but if your mom is too much for you to handle, I'd like to offer my services.

Egon: Peter, go away.

Kathy: How big are you, Peter?

Peter: Big enough to get your attention.

Egon: Mom, I'm not having a three-way with Peter.

Kathy: Sharing is caring, my boy.

Egon rolls his eyes. Peter undresses and takes position of Kathrine's ass. While fucking her, he smacks her on the ass.

Kathy: Spank me harder, Peter.

And Peter slaps her ass again. The double penetration went on a few minutes, resulting in tears running down her face. It was fun, but now she just wanted alone time with her son.

Kathy: That's good Peter, now I just want to be alone with my son.

Peter: Well, at least I got the opportunity. It was nice.

Egon: Good, now go away.

After Peter came, he pulled out and got dressed, then left the room with a smile on his face. He rejoins his friends.

Winston: That didn't take long, Peter.

Peter: At least I got a piece of the action.

Back in Peter's office, Egon and his mom trade positions. He gets behind his mom, smacks her ass before penetrating her vagina. His cock slowly went in, stretching her vaginal walls to his thickness. Every time Kathrine's ass clapped against his thighs, his cockhead bumped her cervix and involuntarily forced her to squeeze his cock.

Kathy: That's right, Egon. Fuck me hard.

She swore, pushing her ass back and encouraging him to keep pounding. His thumb massages circles around her asshole, softening it and making her moan. Then he dared to stick his thumb inside her lubricated asshole. Egon clenched his teeth to muster every bit of power required to fill his mother up with his seed at the sight of her heart-shaped ass bouncing on his thighs and feeling her vaginal walls gripping his cock. Kathrine was about to climax.

Kathy: Fuck, you're gonna make me cum!

She screamed, feeling her son's thumb going in deeper into her asshole.

Egon: Oh yes, cum on me, mom.

A few more thrusts of his cock, her vaginal walls collapsed and contracted on her son's cock. Waves of unprecedented sexual bliss ripped through her body, creating an intense contrast of making her feel so alive, yet on the verge of blacking out.

Kathy: Oh, fuck!

She moaned, collapsing on the couch with a stream of juices squirting out of her pussy. It was a moment of sexual ecstasy. He came and filled his mom's pussy with his seed. Satisfied and exhausted, Egon lays down beside his mother.

Egon: Mom, you think we can do that again in the future?

Kathy: Sure, son. You know how much I love you.

Egon: I love you more, mom.

Egon strokes her face and kisses her forehead before falling asleep in each other's arms.