But if you show it to people, it's not personal use. If you make a rip-off of Star Wars, OK. Now show it to others. Same with a t-shirt. Of course, a lawsui

But if you show it to people, it's not personal use. If you make a rip-off of Star Wars, OK. Now show it to others. Same with a t-shirt. Of course, a lawsuit has to do with damages... what is the damage of a t-shirt 6 people saw? But if you wear it on a TED talk?