I was today years old when I found out that in the Battle Nexus 2 video game, the TMNT fight the TMNR while Splinter and the turtle sensei discuss their own past match (and bitch about their sons' lack of intellectual development). And it's as hilarious as it sounds.
Rat!Mike: I heard turtles move slow, but I didn't know their minds were slow, too!
Turtle!Don: Hey, buddy. Isn't your master a turtle?
Rat!Raph: You dare to insult our master??? That's going too far!