Who said "Humor is laughing at things that aren't actually funny."?

This quote is attributed to Billy.

Humor is laughing at things that aren't actually funny. - Billy

"Humor is laughing at things that aren't actually funny."

Billy Humor

"I'm a big fan of science!"

"Mandy, wouldn't it be great if we could stay young forever?"

"I love the smell of destruction in the morning!"

"Why does everything have to be so complicated?"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."