At Kon's popcorning, Raph let out an actual growl, then slapped the bowl up in Kon's face so that the popcorn was thrown all over him.

Then he turned and stomped off, grumbling to himself, kicking at anything that was in his way, like a little mini Christmas tree near the railing.

Maybe later he'd be able to talk to the older Raph in a calmer and more mature fashion. Right now, he felt like his place was threatened and he was in a snitty mood over it.