Humorous Realistic Character Tattoo Design

I need a realistic tattoo design of a character on my back. This tattoo is to fulfill a lost bet and it needs to have a humorous twist to it. The character can be an animal, a person or even a fictional character, but should be depicted in a funny way.

Ideal Skills:
- Tattoo design with a focus on realistic styles
- Strong sense of humor
- Character design
- Experience working on designs intended for a specific body part

Please include a portfolio of your previous work, preferably with realistic tattoo designs.