"He sees the lighter side of everything!"
1. He's brilliant. Flat out smarter than the vast majority of people he comes in contact with, and he finds this funny.
2. Everything is funny, including ambushes. Including ambushes where he's the one being ambushed.
3. He's a sadist. Pain is even funnier than ambushes. Screaming is extra extra funny, and trapping someone who is afraid of heights a few thousand feet in the air in a spinning wind funnel is downright hilarious.
Stop laughing at things that aren't funny, you goddamn weirdo!
— The Nostalgia Critic about Johnny from The Room (2003)
"Hyenas laughing - what's the joke?" - Femeref phrase meaning "That's not funny"
— Gibbering Hyenas flavor text, Magic: The Gathering