...It could be bunnies (Hellsing ficlets)
Antony D'Addezio was suddenly fairly certain that the most dangerous words in his universe had to be Sir Integra saying, "Now, I have a theory."
It was closely followed, on the danger scale, by his cousin leaning forward with a smirk, saying, "Do tell."
----
"Come now, Master," Alucard said with a slow, toothy grin. "When did you forget how to take risks?"
Integra stiffened. "This isn't about taking risks, Alucard. It's about... impossibilities!"
"Nothing is impossible, Master, except that thinking makes it so."
"You..." She trailed off. "You are impossible."
"Merely improbable, my Master."
She sniffed in irritation. "Fine. We'll try it your way. But if it goes wrong, I'm locking you back in the basement for thirty more years."
He grinned.