"Well... all right mom, let's do this" said Luke after moment of reflection.
"I known, that you will agree, let's go to your room." said Alisa with smile.
When they passed through the hall Alisa said to her fused husband "We going upstairs to Luke's room for a moment."
The fusion slightly smiled, sensing what they will do there.
When they arrived to Luke's room Alisa seen a mess all around "Luke you should clean up you room a little."
"Sorry mom but I didn't have time" said Luke remembering last night with his girlfriend, dad and the suit."Here's the suit, mom."
"So we just dress up the suit, zipping it and we get conjoined ?" asked Alisa.
"Yes, that how it works, so are you ready mom ?"
"Of course honey."
Moments later Luke and Alisa where getting in the suit, zipping it up and at the next moment they felt a warm feeling as their body fused and become two headed. Luke’s half of the body was that of a slim, slightly muscular 18 year old. While Alisa's was thinner and more feminine. Two other strange things were the single breast on Alisa's side and the vagina under Luke's penis.
"This is amazing!" Alisa gawked, moving her arm around the body.
Looking down, both of them noticed both genitals, one below the other.
"Yea, that remains me of time when I was conjoined with Sarah. So what we do now mom ?"
"Well, we are not done entirely, still we have something to do to fully fuse remember ?" said Alisa after which she grabbed and started to stroke Luke's penis.
They started moaning with pleasure and Alisa barely spoke "So this is how male pleasure feels."
Luke lost in pleasure started to touch his mother breast.
After a moment their body started to change, differences between them started to fade. Luke's half started to gain his mother appearance, and Alisa started to get her son appearance.
After a short time as their climax was closer as their heads also was also getting closer.
Their both started to saying "We will cum!"
At the moment of their climax, their heads merged together, making a perfect mix of Luke and Alisa.
"We... done... it." said new fusion with voice that resembled Luke and Alisa at the same time.
"This is really feels amazing, we think we need a name, what to call ourselves ? Oh. We know, we should name ourselves Alisuke" after that they start to explore their body.
"Well, well, well, what do we have here" said voice behind Alisuke, 'they' turn around and seen fusion of Sarah and Ethan(Luke's dad)."Now this is a bonding, you are my son and wife, and I am your girlfriend and husband."
"Yes we are interesting couple" said Alisuke.