That's...more or less what Donnie had started to figure, but it's still strange to hear it from this person. A friend? He must know them...future them (????). That would explain why he's been so nice!

The little turtle stares at the picture again, putting his slightly greasy fingers on the screen to enlarge the image. He copies big!Donnie's pose, studious hand to chin, jutting out his lower lip.

Did time get messed up somehow? Maybe he fell into a timewarp! But then what happened to his bigger self?

"Where'd he go?" he finally asks.