I found references to some strange tattoos on Ann Althouse's blog. When I say STRANGE, I'm not kidding:
Ropes tattooed around your arms and legs so when you crossed your arms or legs it would appear as if you were suggesting bondage.The rest of the suggested tattoos are even stranger.
Robot parts tattooed on working segments of your body.
Open eyes tattooed on your eyelids.
A mustache tattooed with glow-in-dark ink, just for fun.
Jagged backhoe bucket teeth tattooed around your mouth.
Mucus tattooed draining from your nose.