At the top of the Cartoon Style image, "Happy Birthday Mark"

At the bottom of the image, "From Tough Mudder to Tank Mudder—make a splash!"

In the center, illustrate a riotously fun cartoon scene inside a giant fish aquarium that’s been turned into a Tough Mudder course. Mark, with an oversized grin and exaggerated limbs, swings mid-air on a smiling electric-blue eel “rope,” sending swirls of chocolate-brown “mud” mixing with bright teal water. Thick black outlines and bold, saturated colors make everything pop.

Around him, cheeky sea critters cheer: a buff goldfish in a sweatband flexes, pufferfish form a bubbly “barbed wire” crawl, a starfish offers a high-five foam finger, and a crab in a referee shirt blows a whistle. Coral and kelp create colorful obstacles labeled on tiny placards (minimal text): “Kelp Crawl,” “Eel Swing,” “Bubble Wall.”

Outside the tank glass, wife Kelly and kids Jamie, Emily, and Lily press up with goofy, squished-cheek faces and big sparkling eyes, waving handmade fish-shaped signs that say “Go Dad!” Each has their name on their shirt: “Kelly,” “Jamie,” “Emily,” “Lily.” Add playful details: a seahorse handing Mark a tiny water bottle, confetti-bubbles and glittery streamers rising, dynamic motion lines, and splash effects.

Style: Playful cartoon characters with exaggerated proportions, thick outlines, bright saturated colors, and whimsical, energetic poses. Energetic, humorous composition with a slight fisheye perspective to sell the giant-aquarium setting.

Generated with these themes: Tough mudder, fish aquarium, wife Kelly, children Jamie, Emily, Lily, and .

Made with ❤️ by AI.