"I bet you could find our other siblings, Don!"
Don leaned back in his chair and sighed, rubbing his eyes. Negotiating Leo's desire for a feng shui inspired habitat with Mikey's desire for a turtle obstacle course was wearing on him.
"Why would I do that?"
"…Don't you think about it sometimes? What it would be like? If we could mutate them, like us?"
Don sighed.
"Well, since I don't have any ooze lying around the lair—"
"Not my question, dude."
Don sighed again.
"Yes, I've thought about it. And even if we had any, I wouldn't do it."
It was like telepathy. Somehow, they always knew when the other needed to talk. Even in the middle of the night. Raph didn't have to wait for more than five minutes in the dojo before Leo appeared.
"I had a dream," he said without preamble. "About mom."
Leo waited.
"We…we found some ooze. And so we mutated her, so she was like us. And she…" Raph's eyes went distant. "She reached out and put her hand on my shoulder. And she called me 'my son.' You know, like Splinter does. Only it was her."
Leo was silent a long while.
Wow, this is turning into a real fic, with a plot* and everything!
*my definition of 'plot' is pretty loose.