John laughed while Peter made his scene regarding his vocal imagery. It was fair, considering that he was really painting a disgusting image to be had. Though, it just was what it was. This moment was another stepping stone for John to bound past his feelings around what had happened. Talking to Kitty did some good to help him through it, and now Peter and laughing. It was something else.
Plus Quill did just call Beast a muppet, which caused another hearty laugh.
"I haven't seen a muppet able to throw someone tens of feet with a backhand." John mentioned. "Fuck, I think I've seen him flip a car or something, plus he's insanely fast. It's just, he's also a ridiculous genius."