16 year old Twilight Sparkle was a busy girl, finding the origin of things was not only a hobby but a life calling, so wherever she found a mystery that needed solving she would dedicate any amount of time necessary to achieve full understatement.

So what was this new mystery that it call the attention of the purple head genius? 'bang'. There it was. 'bang' again and again, when her former babysitter would visit her and her brother that noise would follow. 'bang'.

"Did you hear that Spike?. I have tried to do a research but i still require more data".'moan' Twilight was sure that she wouldn't be able to continue with her investigation of the paranormal occurrence near Canterlot High School ic she didn't decipher this first.'groan'.

Twilight when over her list of info she have obtained and detailed the fact she had so far:
1) The noises came from her brother Shining Armor's room
2) The noises only happened when he was with Cadance
3) The noises had a higher probability of occurrence when the subjects in fact number 2 were alone.
4) there were a total of 5 distinctive sounds involved in the research.(banging,groans, moans,yelps and the last that Twilight could not identify, but it was akin to slapping something wet)
5) The subjects wouldn't provide Twilight with any kind of answer with respect to the phenomenon.

So all that mean that Twilight needed to hypothesize and create and scenario of similar proportions but everything was fruitless.

And so that left only one solution. To intrude in the phenomenon itself, and today the conditions were perfect for it. Her parents were gone and wouldn't come back until morning, Cadance was present to study with her brother. Twilight was ready to solve this question once and for all. She had acquired the necessary tool for this endeavor, stethoscope and after talking to the principal she has been allowed to use the state of the art x-ray goggles of the school. Still she wanted to tackle the problem step by step, starting for the simple and then going with the complex.

So Twilight started by putting her ear to the wall that divided their rooms. Focusing she began to her the distant sound of banging , like wood hitting against something else, the slight vibration fo the wall indicated that it was Shining's bed. The second sound was metallic in nature but still indistinguishable. Twilight used the stethoscope and now the second sound became clear, squeaking.
Squeaking but what, in that moment Spike jumped on the bed and started bouncing on it, hard, Twilight who was lost in thoughts didn't put any attention to the little canine"Spike! Stop that i can't think with that... Squeaking?, Spike you are a genius".

So the other noise was the springs of Shinny's bed." Ok I got those down. Still not enough data". The dog could only bark and shake his head at the innocence of his owner. Twilight then put the x-ray goggles on an activate them. With a greenish glow now she could see through walls and objects within certain range.

Turning toward her subjects Twilight was completely confused for what she saw or more accurate what the goggles allowed to see, she saw bones, more accurate, skeletons, one male and one female of course and the female one lay in top of the male one doing weird motions. Moving up and down and sometimes other kind of moves. Twilight was completely at lost, taking the goggles off her face Twilight shook her head. This was annoying, so annoying" I don't get it Spike, I just don't, what could they be doing?".

Her loyal dog simply moved where some of her old plushies lay and took one with his mouth, one that was a female dog and let it on the floor in front of his owner then moving to the rear of the plushie Spike did mount the stuffed animal and started moving back and forth while sometimes bitting it and growling, and like magic Twilight understood. "Fighting? Those two?". Spike stopped after hearing his master missing the answer completely then deciding that any more trying to explain in his part was useless Spike continued humping the heck out of the plushie.

30 MINUTES AFTER...
"I'll see you tomorrow Champ, and thanks for today". With a wave Cadence left the residence of her boyfriend.

Shining when back to his room when suddenly the door next to his room was violently opened, from it a very twitchy and manic Twilight walked toward him "Hiiii big brotheeeer"

"Hi Twi, what's going on?". Shining responded already going through his contingency plans for wherever his little sister went bunkers.

"Just wondering what you and Cadance were doing in your room?". Shining's soul left his body temporally. Were they too loud? "Sooo where you two fighting?".

"Fi-fighting?" Shining was baffled by the self answer more that by the question. "Yeeesss?" a nervous and not so subtle grin appeared in his face hoping for all that was holy and saint that Twilight would fall for that.

To his relive, it did. "It make sense, it. Make. Sense! Yes, the moves, the noises, the expressions on your faces everything make sense now ha ha ha". Eye still twitching a little Twilight returned to his room like nothing happened and Shining let out a breath he didn't know he was holding but then "What do you mean by 'the moves'?, Twilight?, Twilight?. It didn't matter how many times Shining called her sister, she didn't answer. Her mind putting the problem in the 'solved' bin and lock away and it would resurfaced until her future friend Sunset Shimmer was in a similar position.

"Twilight? I'm serious here, what did you mean by moves?".

Extra bits part 1 End.

Author's Note

Hope you like the extra, I'm way worse in writing comedy that sex scenes so the next story won't have much of those, but i will try to put some where the mood call for it. So now to the next part of this story "Fruits of love" corny tittle I know but to me it sound appropriate. Got a party to plan so it will take a bit. Thanks for reading.