This is the story where a mockery from Damien had caused his 15 year old brother Gavin to get his revenge on him with a device in his hand.  It all started earlier this week, when Gavin just had a terrible mishap from his science project from school, which as a result, caused himself to grow much fatter rapidly, weighing at a massive 2,000lbs in the process!  He initially tried to aim at the teddy bear to see if the device could stuff it rapidly.  Ultimately, he got put off and ended up pulling the trigger, bounced against the mirror before the beam hits right at him, which caused himself to grow fatter instead.
Gavin had a look of a bottom-shaped body, which made his butt and thighs looking so much bigger, while also having his belly noticeably fat too, and the rest looking thicker, as now he has a massive girth than his skinny self before.  At least the teen knew the device worked so well, but what happens next is non-stop mockery from his 10 year old brother Damien, and it really annoyed Gavin every bit of it.  Even when Damien saw Gavin's massive girth for the time, he simply laughed, and does everything like calling fat names, jiggle Gavin's fat body, and even slapping his fat butt that Damien seems to find it funny at Gavin's expense.
That annoyed Gavin so much, it was time to put something right for the change, but instead of allowing his little brother to get fatter like him, the teenager thought it'll be a good idea to make something that Damien always will be, and that's being a little brother... literally!  What that meant is Gavin can use the ray device and be able to shrink his brother down to size, so that he would want to both humiliate and intimate Damien as to return the favour.
The obese sized teen is certainty looking forward to it, letting out a grin look on his face, as he had managed to adjust the device in his spare time, expecting this to work first time as far as size height in concerned.  He grabbed the device and headed out of his bedroom, before he looks around to see where Gavin is, hoping to hear where he's at.
"Now where's that little twerp gone?  I can't wait to give him for mocking my size."  Gavin says to himself.
Soon, he waddled his 2000 pound, bottom-heavy shaped body, as it wouldn't take long to actually find Gavin around the house, as he spots his little brother at where?