"Nopony's home yet..." Spike mumbled under his breath, slight panic and shivers raced down his spine thinking of the worst possible thing that could happen to him. He walked down the streets of a unusually quiet Ponyville carrying part of a giant saddlebag with him, edited by Rarity so that it would be fitted for someone as small as Spike. He looked from left to right with an uncertain frown of displeasure as he constantly checked the streets to make sure that no single pony even saw him with what he had in his saddle, not even Rarity or Twilight.
He had the free few seconds to look inside of his saddlebag to check the contents he had bought with Twilight's own hard-worked bits, feeling ultimately terrible that he had stolen bits in the first place and bought the last thing that Twilight would expect stolen bits to go into. He moved the top-lid of his saddlebag and looked inside to see what he had bought from the Medical store, a large pack of "Silly Filly Diapers" a plastic container holding just about sixteen diapers made for ponies that were over the age of five. And luckily, Spike was just about around that age to fit into garments he had once dreamed of.
He closed the lip of his saddlebag and looked around to find that he walked up to the front of the Ponyville library, he had a plan, an agenda to make sure that he wasn't caught, he took note of all of Twilight's schedules and meetings around and make use of the time so that he could buy his fresh pack of diapers.
Spike gulped for a moment and slowly pushed the front door of the library, hearing the creaking coming out from the door made his stomach feel cramped within, he firstly poked his head into the library to try and get a good look of everything. All the light were turned off, this was part of Spikes plan. If he knew that someone was home, the lights would obviously turned on, but they weren't which was perfect for the little dragon.
Without thinking, the little green dragon rushed into the library with the front door closed behind him, he made a quick jolt up the stairs and into Twilight's bedroom. The only source of lighting that wasn't turned off by the young dragon since it is where he would stash his newly bought diapers, he rushed over to one of the wardrobes that Twilight had in the corner of her bedroom and he opened it. And with no surprise at all, there was no clothes stored into the wardrobe because Twilight.
"Right..." The young dragon mumbled, he opened the lid of the saddlebag once again and pulled out the packet of diapers and flashed them in his own face. The logo "Silly Filly Diapers" were bolded in bright pink and blue text, some of the words were blue, which stood for the little colts and some of the words were pink, for the little fillies. There was an image over the package showing a mare looking after a colt as if he was about to cry, the little colt on the image was wearing one of the diapers and looked like he was having some trouble walking.
His heart felt like a black hole, it just felt like it was going to implode on himself, his urges, mind and even dreams told him to rip open the packet of diapers and wear them. Complete his fantasies and dreams, he would feel so happy for himself.
"I g-guess one wouldn't h-hurt..." Spike gulped, beads of sweat began to make their way down and through his scales, feeling the ever-so disastrous feeling that someone would catch him trying a diaper on would be just around the corner.
Before making his choice, he stashes the pack of diapers in the wardrobe and moves around a few of the boxes inside of it to hide the diapers from Twilight or anyone else that would go snooping around in wardrobes.