Eren could only stare as gigantic humanoid things tore apart his home. Stomping on houses, destroying infrastructure, and, worst of all, eating people, some of which he recognized. These were the titans. They ripped people limb from limb, eating them whole. If you were lucky, you were knocked out before being consumed, but many were not.
A familiar hand stuck his shoulder with urgency, and Eren was freed from his paralysis. He was vaguely aware if his mother's voice through his fear, as he stumbled towards the door on unsteady feet. She begged him to do the unthinkable, and to leave her behind. But he couldn't even think of abandoning her.
It was then that he saw exactly how enormous the titans actually were. Before, he had only caught glimpses, but now, now he was unfortunate enough to witness one causally scooping up his helpless trapped mother.
In that moment, as the monstrosity looming over him dangled Eren's mother above his gaping mouth, Eren felt it. His body was propelled forwards as copious amounts of gas were released by his posterior. Alas, it was no use. His mother dropped onto the titan's tongue with a sickening slap that echoed inside Eren's head, and slid down its throat. The titan's teeth clicked together as it's mouth snapped shut, and the vacant, inhuman smile that stretched across its face burned itself into Eren's memory. He felt a horrible sickness in his throat that was joined by grief, anger, and the frustration that his helplessness caused. He wouldn't let this happen again. He would not allow it. He would exterminate every last Titan on Earth. Only then, once the world was free of the abominations, could he rest.
A member of the guard whizzed by, leaving a pungent cloud in their wake, and Eren barely registered the fact that his pants were more than likely ripped from the force of his fart. Either way, it was a dignified indicator of his farting skill. Few people could pass gas powerfully enough to launch themselves into the air, let alone move forwards. The awakening of his potential meant that he could join the military. That would be the first step in his journey.
He would soon enter a world where the unpleasant aroma of expelled fumes from soldiers' posteriors was stronger than the stench of death, and a scent that brought hope to the hearts of many. Hope that the titans could be fought. Hope that the titans could be beaten. Hope that they could one day live outside of the defensive walls that they had trapped themselves in so long ago.
I had this idea for a crack fic, I might continue it, I might not. Suggestions and corrections are appreciated.