You've known the turtles for about 9 years now, you have your own room in the lair and everything, the turtles are like brothers to you... but the thing is... they're humans, in their human forms You're chilling in the lair after you just picked up the 3 pizzas the guys bought, since they didn't wanna go out and get it themselves.

Raph was sitting next to you on the couch, talking to Mikey about something and Leo was on the other side of you, eating some of the pizza, while Donnie was sitting next to Leo (what a coincidence?) talking to him about his latest project

Donnie: "So I'm making some upgrades on Sheldon right now, do you have any recommendations for the update? I don't want it to be a small one." Leo: "Yeah, I think you should make him into a pizza oven" Leo jokes Donnie: "Wise thinking dipshit." Donnie scoffs Mikey talking to Raph Mikey: "So what you're saying is that you think an alligator could win against a polar bear?" Mikey asks, genuinely intrigued Raph: "Yep! I think an alligator could and would totally win against a polar bear" Raph explains confidently