This is by me :)

Rarity : SPIKE ?!? What are you doing here ?!?
Spike : umm... I live here and why are you here
Rarity : umm...nothing
Spike : hmm... Why do you have one of my cookies behind your back? Why do you look so hungry * gasp * * does the face above *
Rarity : uhh.. Spike ! Stop ! Don't look at me like that !
Spike : You like the cookies I baked don't you Rarity .
Rarity:er...YES ! I LOVE THEM !! * shoves in mouth *
Spike : I knew it ! But you shouldn't eat all of them...
Rarity : why ? Am I going to blow up?
Spike : no... It attracts parasprites ... * Rarity is surrounded by parasprites * then you blow up ...
BOOM !
Applejack : heh I remember when I first tried Spike's cookies