"My squirrels have huge nuts!" or something similar. Then, you show four squirrels on the shirt, each with a nut as large as they are
Then on the back, you have a picture of a Wrangler (YJ or TJ option for buyers) with
www.4bangerjp.com above it.
If you need someone to do the Jeep artwork, let me know. Sketching cars is my specialty.