Ok after seeing what happened to Boat. I definitely won that bet. Anyways the best possibility is that Boat dies painlessly and instantly with his head being crushed. One of the worst possibilities is that Prism doesn’t like the taste of Boat and spits Boat out. Which is worse because he is definitely not recover and will likely die of blood loss or an infection if he manages to survive long enough. I am not sure how painful is melting in stomach acid but just being eaten is a likely fate.
"Prism!... It's me again, it's Barracuda...
Come on out, please... I know you're very angry, and hurt, so please come out so I can help you...
I'm right here, it's just me now and I'm not going to hurt you, the rest of these shapes don't want to hurt you either, so... Please...
The forest is completely still, no sounds except for the rain and thunder. Something bad had happened...
Scalene scurries in the bushes, whisper-shouting for the larger beast to come out.
"Prismmm!!! Where are you!?"
"C-cuda... Cuda-! Cuda!!...
Barracuda!!!-"
"What!? Stop blabbering so much and spit it out already!!"
The smaller triangle immediately dives into the bushes. The snake is confused, until he hears a large sound from behind him, grabbing his attention.
The corrupted snake is clearly shocked, he didn't believe she was actually going to kill him that easily and without hesitation. He tries to move, but he was terrified, yet still needed to calm her down.
I know, h-he is a bad guy, and- he hurt you, a lot...
B-but, please, please let him go... I'll get that thing off you and we can go back home, away from shapes like him, okay? How does that sound..?
Just- let him go, and you can finally take some rest, okay?
How about a nap near the pond, like the old times? Doesn't that sound good..?"
The dinosaur seems to calm down, although more from the blood loss than by seeing him, and stares at the snake intently.
I missed you... A lot..."