It was clearly Post Mortem. Lugia was simply on it's way back home from work to post on /vp/ but Post Morty, an avid /vp/ user, went out of his way to shout "DA SEX THO DA SEX THO" at poor Lugia. Annoyed but too tired to unleash her holy wrath decided not to dignify Post Mortician by stomping on him with her big stinky feet. This, however, did not stop the ever determined Post Melon from returning to /vp/ and spamming "DA SEX THO" with pictures of Lugia-chan. Even when he missed his window of opportunity Post Malcom continues to harass and shout his meme in a desperate attempt to bait Lugia-sama into stomping him into a pancake. How then can you justify this? How can anyone side with Most Palone when he clearly made the offense more than once? With all this in mind, obviously Post Alone is the asshole.
