Here's another cartoon I did at the beach and colorized. (Obviously, I'm cheating. The dolphin is a latter addition. My first dolphin sucked -- and basically looked like a brain-damaged shark who'd been in a car accident.)
I started with the Mean Old Man character. He had to be rejecting somebody. A dolphin struck me as funny. Dolphins are cute. Everybody loves dolphins.
I realize how ridiculously improbable his !@#$ house looking right out on the beach is.