A teez-shirt featuring the slogan "Nah ! Rosa Park" could creatively blend elements of humor and activism. A brief quote from Rosa Parks, such as "I have learned over the years that when one's mind is made up, this diminishes fear," This adds depth and context to the front slogan while honoring her legacy.
The overall vibe of the teez-shirt would be fun and light-hearted while still conveying an important message about standing up for one's right and beliefs.