I didn't feel like emo-ness. SUE ME. This is manga/Brohood-verse, by the way, but I'll be going back and forth between the two 'verses.
276 words, humour
2. Hate
"I hate you."
"Say it again."
"I hate you."
Envy smiled sardonically. "You almost sound like you mean it this time."
"I hate you."
"Again, with feeling."
Ed turned away from the sin, striding across the length of the room and away from the open window. "Why haven't you tried to kill me yet?"
"I could tell you, but then I'd have to kill you," he chirped, kicking his legs back and forth and letting his heels collide with the plaster wall below the windowsill.
"I really hate you."
"Hate you too, O'Chibi-chan." Envy spread his arms wide. "I hate you thiiiiis much."
"Why?"
"Because you're a bratty, opinionated loser who doesn't know when to give up, and you're the son of an equally opinionated loser, except he gives up too easily."
Ed raised an eyebrow at his strange visitor. "Nothing about trying to stop your evil world-domination plans, then?"
"Oh! Right! Those! Yeah, I guess that too."
"…You're kind of insane."
"Oh gee. How nice of you, Fullmetal." Envy cocked his head, tendrils of hair falling farther down one shoulder. "How about you? Why do you hate me?"
"Because you're, uh, PSYCHOTIC?"
Envy cackled, throwing his head back. "That's true, that's true! Psychotic, I like it! I like it a lot! Well, thanks for that, chibi-o-mine. Been a good visit. See ya next time!" He flipped himself over the window-sill and into the darkness below.
"Uh, yeah, okay." Ed paused. "Hold on a sec." He ran to the window and yelled out. "WHAT THE HELL DO YOU MEAN, NEXT TIME, YOU DERANGED PALM TREE?"
He could hear the homunculus's crowing laughter fading into the distance.